80988785 has 16 divisors (see below), whose sum is σ = 99582912. Its totient is φ = 63211200.

The previous prime is 80988781. The next prime is 80988829. The reversal of 80988785 is 58788908.

It is not a de Polignac number, because 80988785 - 2² = 80988781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80988781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38942 + ... + 40968.

It is an arithmetic number, because the mean of its divisors is an integer number (6223932).

Almost surely, 2^80988785 is an apocalyptic number.

It is an amenable number.

80988785 is a deficient number, since it is larger than the sum of its proper divisors (18594127).

80988785 is a wasteful number, since it uses less digits than its factorization.

80988785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224.

The product of its (nonzero) digits is 1290240, while the sum is 53.

The square root of 80988785 is about 8999.3769228764. The cubic root of 80988785 is about 432.6549012459.

The spelling of 80988785 in words is "eighty million, nine hundred eighty-eight thousand, seven hundred eighty-five".