685036356 has 24 divisors (see below), whose sum is σ = 1599200064. Its totient is φ = 228233760.

The previous prime is 685036343. The next prime is 685036361. The reversal of 685036356 is 653630586.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13801 + ... + 39503.

It is an arithmetic number, because the mean of its divisors is an integer number (66633336).

Almost surely, 2^685036356 is an apocalyptic number.

It is an amenable number.

685036356 is an abundant number, since it is smaller than the sum of its proper divisors (914163708).

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

685036356 is a wasteful number, since it uses less digits than its factorization.

685036356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27931 (or 27929 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 685036356 is about 26173.1991930677. The cubic root of 685036356 is about 881.5315769995.

The spelling of 685036356 in words is "six hundred eighty-five million, thirty-six thousand, three hundred fifty-six".