680915016 has 48 divisors (see below), whose sum is σ = 1848488460. Its totient is φ = 226437120.

The previous prime is 680914999. The next prime is 680915017. The reversal of 680915016 is 610519086.

680915016 is a `hidden beast` number, since 68 + 0 + 91 + 501 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 457532100 + 223382916 = 21390^2 + 14946^2 .

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 (680915017) 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, 20256 + ... + 42096.

Almost surely, 2^680915016 is an apocalyptic number.

It is an amenable number.

680915016 is an abundant number, since it is smaller than the sum of its proper divisors (1167573444).

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

680915016 is a wasteful number, since it uses less digits than its factorization.

680915016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22286 (or 22279 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 680915016 is about 26094.3483536186. The cubic root of 680915016 is about 879.7601860302.

The spelling of 680915016 in words is "six hundred eighty million, nine hundred fifteen thousand, sixteen".