662991504 has 80 divisors (see below), whose sum is σ = 2024929920. Its totient is φ = 182891520.

The previous prime is 662991487. The next prime is 662991509. The reversal of 662991504 is 405199266.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (662991509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24277 + ... + 43764.

It is an arithmetic number, because the mean of its divisors is an integer number (25311624).

Almost surely, 2^662991504 is an apocalyptic number.

It is an amenable number.

662991504 is an abundant number, since it is smaller than the sum of its proper divisors (1361938416).

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

662991504 is a wasteful number, since it uses less digits than its factorization.

662991504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68088 (or 68082 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 662991504 is about 25748.6213999896. The cubic root of 662991504 is about 871.9722306899.

The spelling of 662991504 in words is "six hundred sixty-two million, nine hundred ninety-one thousand, five hundred four".