80775560 has 32 divisors (see below), whose sum is σ = 182001600. Its totient is φ = 32264640.

The previous prime is 80775559. The next prime is 80775577. The reversal of 80775560 is 6557708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51995 + ... + 53525.

It is an arithmetic number, because the mean of its divisors is an integer number (5687550).

Almost surely, 2^80775560 is an apocalyptic number.

It is an amenable number.

80775560 is an abundant number, since it is smaller than the sum of its proper divisors (101226040).

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

80775560 is a wasteful number, since it uses less digits than its factorization.

80775560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861 (or 2857 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 80775560 is about 8987.5224617244. The cubic root of 80775560 is about 432.2748736484.

It can be divided in two parts, 807 and 75560, that added together give a palindrome (76367).

The spelling of 80775560 in words is "eighty million, seven hundred seventy-five thousand, five hundred sixty".