508697664 has 56 divisors (see below), whose sum is σ = 1425110688. Its totient is φ = 159590400.

The previous prime is 508697633. The next prime is 508697699. The reversal of 508697664 is 466796805.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 74662 + ... + 81189.

Almost surely, 2^508697664 is an apocalyptic number.

It is an amenable number.

508697664 is an abundant number, since it is smaller than the sum of its proper divisors (916413024).

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

508697664 is a wasteful number, since it uses less digits than its factorization.

508697664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155883 (or 155873 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 508697664 is about 22554.3269462868. The cubic root of 508697664 is about 798.2763221690.

The spelling of 508697664 in words is "five hundred eight million, six hundred ninety-seven thousand, six hundred sixty-four".