80086865 has 4 divisors (see below), whose sum is σ = 96104244. Its totient is φ = 64069488.

The previous prime is 80086861. The next prime is 80086871. The reversal of 80086865 is 56868008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63473089 + 16613776 = 7967^2 + 4076^2 .

It is a cyclic number.

It is not a de Polignac number, because 80086865 - 2² = 80086861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80086861) by changing a digit.

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, 8008682 + ... + 8008691.

It is an arithmetic number, because the mean of its divisors is an integer number (24026061).

Almost surely, 2^80086865 is an apocalyptic number.

It is an amenable number.

80086865 is a deficient number, since it is larger than the sum of its proper divisors (16017379).

80086865 is a wasteful number, since it uses less digits than its factorization.

80086865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16017378.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 80086865 is about 8949.1264936864. The cubic root of 80086865 is about 431.0428357359.

The spelling of 80086865 in words is "eighty million, eighty-six thousand, eight hundred sixty-five".