680794600 has 24 divisors (see below), whose sum is σ = 1582847910. Its totient is φ = 272317760.

The previous prime is 680794591. The next prime is 680794601. The reversal of 680794600 is 6497086.

It can be written as a sum of positive squares in 3 ways, for example, as 482153764 + 198640836 = 21958^2 + 14094^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (680794601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1701787 + ... + 1702186.

Almost surely, 2^680794600 is an apocalyptic number.

It is an amenable number.

680794600 is an abundant number, since it is smaller than the sum of its proper divisors (902053310).

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

680794600 is a wasteful number, since it uses less digits than its factorization.

680794600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403989 (or 3403980 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 680794600 is about 26092.0409320544. The cubic root of 680794600 is about 879.7083227553.

The spelling of 680794600 in words is "six hundred eighty million, seven hundred ninety-four thousand, six hundred".