80765660 has 24 divisors (see below), whose sum is σ = 171291456. Its totient is φ = 31985600.

The previous prime is 80765611. The next prime is 80765681. The reversal of 80765660 is 6656708.

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, 17972 + ... + 22011.

It is an arithmetic number, because the mean of its divisors is an integer number (7137144).

Almost surely, 2^80765660 is an apocalyptic number.

It is an amenable number.

80765660 is an abundant number, since it is smaller than the sum of its proper divisors (90525796).

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

80765660 is a wasteful number, since it uses less digits than its factorization.

80765660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40093 (or 40091 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 80765660 is about 8986.9716812728. The cubic root of 80765660 is about 432.2572127945.

The spelling of 80765660 in words is "eighty million, seven hundred sixty-five thousand, six hundred sixty".