1491006 has 64 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 403200.

The previous prime is 1491001. The next prime is 1491013. The reversal of 1491006 is 6001941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36346 + ... + 36386.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2^1491006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1491006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1491006 is an abundant number, since it is smaller than the sum of its proper divisors (2137794).

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

1491006 is a wasteful number, since it uses less digits than its factorization.

1491006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1491006 is about 1221.0675656981. The cubic root of 1491006 is about 114.2421752307.

Adding to 1491006 its reverse (6001941), we get a palindrome (7492947).

The spelling of 1491006 in words is "one million, four hundred ninety-one thousand, six".