532686640 has 80 divisors (see below), whose sum is σ = 1284203520. Its totient is φ = 205274880.

The previous prime is 532686631. The next prime is 532686643. The reversal of 532686640 is 46686235.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 532686593 and 532686602.

It is not an unprimeable number, because it can be changed into a prime (532686643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 860251 + ... + 860869.

It is an arithmetic number, because the mean of its divisors is an integer number (16052544).

Almost surely, 2^532686640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 532686640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642101760).

532686640 is an abundant number, since it is smaller than the sum of its proper divisors (751516880).

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

532686640 is a wasteful number, since it uses less digits than its factorization.

532686640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 532686640 is about 23080.0051993062. The cubic root of 532686640 is about 810.6323568817.

The spelling of 532686640 in words is "five hundred thirty-two million, six hundred eighty-six thousand, six hundred forty".