680761512 has 48 divisors (see below), whose sum is σ = 1848824640. Its totient is φ = 226293408.

The previous prime is 680761511. The next prime is 680761517. The reversal of 680761512 is 215167086.

680761512 is a `hidden beast` number, since 6 + 80 + 7 + 61 + 512 = 666.

It is a super-2 number, since 2×680761512² = 926872472441052288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (680761511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13543 + ... + 39305.

It is an arithmetic number, because the mean of its divisors is an integer number (38517180).

Almost surely, 2^680761512 is an apocalyptic number.

It is an amenable number.

680761512 is an abundant number, since it is smaller than the sum of its proper divisors (1168063128).

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

680761512 is a wasteful number, since it uses less digits than its factorization.

680761512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26142 (or 26135 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 680761512 is about 26091.4068612637. The cubic root of 680761512 is about 879.6940706542.

The spelling of 680761512 in words is "six hundred eighty million, seven hundred sixty-one thousand, five hundred twelve".