1506608640 has 320 divisors, whose sum is σ = 5444651520. Its totient is φ = 394813440.

The previous prime is 1506608639. The next prime is 1506608647. The reversal of 1506608640 is 468066051.

1506608640 is a `hidden beast` number, since 1 + 5 + 0 + 6 + 6 + 0 + 8 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1506608595 and 1506608604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1506608647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4907367 + ... + 4907673.

It is an arithmetic number, because the mean of its divisors is an integer number (17014536).

Almost surely, 2^1506608640 is an apocalyptic number.

1506608640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1506608640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2722325760).

1506608640 is an abundant number, since it is smaller than the sum of its proper divisors (3938042880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1506608640 is an equidigital number, since it uses as much as digits as its factorization.

1506608640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1506608640 is about 38815.0568723015. The cubic root of 1506608640 is about 1146.3928917935.

The spelling of 1506608640 in words is "one billion, five hundred six million, six hundred eight thousand, six hundred forty".