685023968 has 12 divisors (see below), whose sum is σ = 1348641000. Its totient is φ = 342511968.

The previous prime is 685023953. The next prime is 685023979. The reversal of 685023968 is 869320586.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10703468 + ... + 10703531.

It is an arithmetic number, because the mean of its divisors is an integer number (112386750).

Almost surely, 2^685023968 is an apocalyptic number.

It is an amenable number.

685023968 is a deficient number, since it is larger than the sum of its proper divisors (663617032).

685023968 is a wasteful number, since it uses less digits than its factorization.

685023968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21407009 (or 21407001 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 685023968 is about 26172.9625377029. The cubic root of 685023968 is about 881.5262631798.

The spelling of 685023968 in words is "six hundred eighty-five million, twenty-three thousand, nine hundred sixty-eight".