685736808 has 32 divisors (see below), whose sum is σ = 1756157760. Its totient is φ = 223003520.

The previous prime is 685736797. The next prime is 685736839. The reversal of 685736808 is 808637586.

685736808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347460 + ... + 349427.

It is an arithmetic number, because the mean of its divisors is an integer number (54879930).

Almost surely, 2^685736808 is an apocalyptic number.

It is an amenable number.

685736808 is an abundant number, since it is smaller than the sum of its proper divisors (1070420952).

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

685736808 is a wasteful number, since it uses less digits than its factorization.

685736808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696937 (or 696933 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 685736808 is about 26186.5768667842. The cubic root of 685736808 is about 881.8319309953.

The spelling of 685736808 in words is "six hundred eighty-five million, seven hundred thirty-six thousand, eight hundred eight".