685671364564 has 24 divisors (see below), whose sum is σ = 1271443611200. Its totient is φ = 322640755200.

The previous prime is 685671364501. The next prime is 685671364601. The reversal of 685671364564 is 465463176586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29862669 + ... + 29885620.

Almost surely, 2^685671364564 is an apocalyptic number.

It is an amenable number.

685671364564 is a deficient number, since it is larger than the sum of its proper divisors (585772246636).

685671364564 is a wasteful number, since it uses less digits than its factorization.

685671364564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59748463 (or 59748461 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 61.

The spelling of 685671364564 in words is "six hundred eighty-five billion, six hundred seventy-one million, three hundred sixty-four thousand, five hundred sixty-four".