80718804 has 18 divisors (see below), whose sum is σ = 204039290. Its totient is φ = 26906256.

The previous prime is 80718779. The next prime is 80718809. The reversal of 80718804 is 40881708.

It can be written as a sum of positive squares in only one way, i.e., 78322500 + 2396304 = 8850^2 + 1548^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2242189 = 80718804 / (8 + 0 + 7 + 1 + 8 + 8 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80718809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1121059 + ... + 1121130.

Almost surely, 2^80718804 is an apocalyptic number.

It is an amenable number.

80718804 is an abundant number, since it is smaller than the sum of its proper divisors (123320486).

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

80718804 is a wasteful number, since it uses less digits than its factorization.

80718804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242199 (or 2242194 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 80718804 is about 8984.3644182546. The cubic root of 80718804 is about 432.1736056362.

The spelling of 80718804 in words is "eighty million, seven hundred eighteen thousand, eight hundred four".