685695153776 has 10 divisors (see below), whose sum is σ = 1328534360472. Its totient is φ = 342847576880.

The previous prime is 685695153769. The next prime is 685695153791. The reversal of 685695153776 is 677351596586.

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 as a sum of consecutive naturals, namely, 21427973540 + ... + 21427973571.

Almost surely, 2^685695153776 is an apocalyptic number.

It is an amenable number.

685695153776 is a deficient number, since it is larger than the sum of its proper divisors (642839206696).

685695153776 is a wasteful number, since it uses less digits than its factorization.

685695153776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42855947119 (or 42855947113 counting only the distinct ones).

The product of its digits is 285768000, while the sum is 68.

The spelling of 685695153776 in words is "six hundred eighty-five billion, six hundred ninety-five million, one hundred fifty-three thousand, seven hundred seventy-six".