80765800 has 24 divisors (see below), whose sum is σ = 187780950. Its totient is φ = 32306240.

The previous prime is 80765779. The next prime is 80765801. The reversal of 80765800 is 856708.

It can be written as a sum of positive squares in 3 ways, for example, as 63075364 + 17690436 = 7942^2 + 4206^2 .

It is a super-2 number, since 2×80765800² = 13046228899280000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80765801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201715 + ... + 202114.

Almost surely, 2^80765800 is an apocalyptic number.

It is an amenable number.

80765800 is an abundant number, since it is smaller than the sum of its proper divisors (107015150).

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

80765800 is a wasteful number, since it uses less digits than its factorization.

80765800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403845 (or 403836 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 80765800 is about 8986.9794703226. The cubic root of 80765800 is about 432.2574625540.

The spelling of 80765800 in words is "eighty million, seven hundred sixty-five thousand, eight hundred".