694656656496 has 60 divisors (see below), whose sum is σ = 2120807827320. Its totient is φ = 210502016640.

The previous prime is 694656656489. The next prime is 694656656527.

694656656496 is a `hidden beast` number, since 6 + 9 + 4 + 6 + 56 + 6 + 564 + 9 + 6 = 666.

694656656496 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219271351 + ... + 219274518.

It is an arithmetic number, because the mean of its divisors is an integer number (35346797122).

Almost surely, 2^694656656496 is an apocalyptic number.

694656656496 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

694656656496 is an abundant number, since it is smaller than the sum of its proper divisors (1426151170824).

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

694656656496 is a wasteful number, since it uses less digits than its factorization.

694656656496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438545894 (or 438545885 counting only the distinct ones).

The product of its digits is 1511654400, while the sum is 72.

The spelling of 694656656496 in words is "six hundred ninety-four billion, six hundred fifty-six million, six hundred fifty-six thousand, four hundred ninety-six".