80745880 has 16 divisors (see below), whose sum is σ = 181678320. Its totient is φ = 32298336.

The previous prime is 80745827. The next prime is 80745881. The reversal of 80745880 is 8854708.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 2018647 = 80745880 / (8 + 0 + 7 + 4 + 5 + 8 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80745881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009284 + ... + 1009363.

It is an arithmetic number, because the mean of its divisors is an integer number (11354895).

Almost surely, 2^80745880 is an apocalyptic number.

It is an amenable number.

80745880 is an abundant number, since it is smaller than the sum of its proper divisors (100932440).

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

80745880 is a wasteful number, since it uses less digits than its factorization.

80745880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018658 (or 2018654 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 80745880 is about 8985.8711319493. The cubic root of 80745880 is about 432.2219224423.

The spelling of 80745880 in words is "eighty million, seven hundred forty-five thousand, eight hundred eighty".