80545660 has 48 divisors (see below), whose sum is σ = 192882816. Its totient is φ = 27988992.

The previous prime is 80545651. The next prime is 80545721. The reversal of 80545660 is 6654508.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 4692 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (4018392).

Almost surely, 2^80545660 is an apocalyptic number.

It is an amenable number.

80545660 is an abundant number, since it is smaller than the sum of its proper divisors (112337156).

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

80545660 is a wasteful number, since it uses less digits than its factorization.

80545660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18262 (or 18260 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 80545660 is about 8974.7233940662. The cubic root of 80545660 is about 431.8643764364.

The spelling of 80545660 in words is "eighty million, five hundred forty-five thousand, six hundred sixty".