80890564 has 12 divisors (see below), whose sum is σ = 142278444. Its totient is φ = 40239584.

The previous prime is 80890559. The next prime is 80890577. The reversal of 80890564 is 46509808.

It can be written as a sum of positive squares in 2 ways, for example, as 67930564 + 12960000 = 8242^2 + 3600^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 50539 + ... + 52114.

It is an arithmetic number, because the mean of its divisors is an integer number (11856537).

Almost surely, 2^80890564 is an apocalyptic number.

It is an amenable number.

80890564 is a deficient number, since it is larger than the sum of its proper divisors (61387880).

80890564 is a wasteful number, since it uses less digits than its factorization.

80890564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102854 (or 102852 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 80890564 is about 8993.9181672951. The cubic root of 80890564 is about 432.4799264520.

The spelling of 80890564 in words is "eighty million, eight hundred ninety thousand, five hundred sixty-four".