685311024 has 20 divisors (see below), whose sum is σ = 1770386936. Its totient is φ = 228436992.

The previous prime is 685311007. The next prime is 685311037. The reversal of 685311024 is 420113586.

It is a junction number, because it is equal to n+sod(n) for n = 685310982 and 685311000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7138609 + ... + 7138704.

Almost surely, 2^685311024 is an apocalyptic number.

It is an amenable number.

685311024 is an abundant number, since it is smaller than the sum of its proper divisors (1085075912).

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

685311024 is a wasteful number, since it uses less digits than its factorization.

685311024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14277324 (or 14277318 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 685311024 is about 26178.4457903826. The cubic root of 685311024 is about 881.6493790983.

The spelling of 685311024 in words is "six hundred eighty-five million, three hundred eleven thousand, twenty-four".