80680660 has 24 divisors (see below), whose sum is σ = 169643880. Its totient is φ = 32231424.

The previous prime is 80680651. The next prime is 80680709. The reversal of 80680660 is 6608608.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26687556 + 53993104 = 5166^2 + 7348^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17476 + ... + 21604.

It is an arithmetic number, because the mean of its divisors is an integer number (7068495).

Almost surely, 2^80680660 is an apocalyptic number.

It is an amenable number.

80680660 is an abundant number, since it is smaller than the sum of its proper divisors (88963220).

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

80680660 is a wasteful number, since it uses less digits than its factorization.

80680660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115 (or 5113 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 80680660 is about 8982.2413683891. The cubic root of 80680660 is about 432.1055197770.

The spelling of 80680660 in words is "eighty million, six hundred eighty thousand, six hundred sixty".