685080756720 has 100 divisors (see below), whose sum is σ = 2379386984040. Its totient is φ = 182688200064.

The previous prime is 685080756677. The next prime is 685080756761. The reversal of 685080756720 is 27657080586.

685080756720 is a `hidden beast` number, since 6 + 8 + 50 + 8 + 0 + 7 + 567 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52854690 + ... + 52867649.

Almost surely, 2^685080756720 is an apocalyptic number.

685080756720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

685080756720 is an abundant number, since it is smaller than the sum of its proper divisors (1694306227320).

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

685080756720 is a wasteful number, since it uses less digits than its factorization.

685080756720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105722364 (or 105722349 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 685080756720 in words is "six hundred eighty-five billion, eighty million, seven hundred fifty-six thousand, seven hundred twenty".