685495964 has 12 divisors (see below), whose sum is σ = 1270183824. Its totient is φ = 322586304.

The previous prime is 685495949. The next prime is 685495973. The reversal of 685495964 is 469594586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5040344 + ... + 5040479.

It is an arithmetic number, because the mean of its divisors is an integer number (105848652).

Almost surely, 2^685495964 is an apocalyptic number.

It is an amenable number.

685495964 is a deficient number, since it is larger than the sum of its proper divisors (584687860).

685495964 is a wasteful number, since it uses less digits than its factorization.

685495964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080844 (or 10080842 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 56.

The square root of 685495964 is about 26181.9778473667. The cubic root of 685495964 is about 881.7286801093.

The spelling of 685495964 in words is "six hundred eighty-five million, four hundred ninety-five thousand, nine hundred sixty-four".