80697660 has 48 divisors (see below), whose sum is σ = 226728096. Its totient is φ = 21445632.

The previous prime is 80697653. The next prime is 80697689. The reversal of 80697660 is 6679608.

It is a happy number.

It is a super-2 number, since 2×80697660² = 13024224658951200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16632 + ... + 20928.

It is an arithmetic number, because the mean of its divisors is an integer number (4723502).

Almost surely, 2^80697660 is an apocalyptic number.

It is an amenable number.

80697660 is an abundant number, since it is smaller than the sum of its proper divisors (146030436).

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

80697660 is a wasteful number, since it uses less digits than its factorization.

80697660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4622 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 80697660 is about 8983.1876302346. The cubic root of 80697660 is about 432.1358669010.

The spelling of 80697660 in words is "eighty million, six hundred ninety-seven thousand, six hundred sixty".