685626808 has 16 divisors (see below), whose sum is σ = 1299996000. Its totient is φ = 338961216.

The previous prime is 685626791. The next prime is 685626829. The reversal of 685626808 is 808626586.

It is a happy number.

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, 480768 + ... + 482191.

It is an arithmetic number, because the mean of its divisors is an integer number (81249750).

Almost surely, 2^685626808 is an apocalyptic number.

It is an amenable number.

685626808 is a deficient number, since it is larger than the sum of its proper divisors (614369192).

685626808 is a wasteful number, since it uses less digits than its factorization.

685626808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963054 (or 963050 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 685626808 is about 26184.4764698475. The cubic root of 685626808 is about 881.7847765095.

The spelling of 685626808 in words is "six hundred eighty-five million, six hundred twenty-six thousand, eight hundred eight".