80408665 has 8 divisors (see below), whose sum is σ = 101568960. Its totient is φ = 60941232.

The previous prime is 80408617. The next prime is 80408687. The reversal of 80408665 is 56680408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80408665 - 2²⁵ = 46854233 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423109 + ... + 423298.

It is an arithmetic number, because the mean of its divisors is an integer number (12696120).

Almost surely, 2^80408665 is an apocalyptic number.

It is an amenable number.

80408665 is a deficient number, since it is larger than the sum of its proper divisors (21160295).

80408665 is a wasteful number, since it uses less digits than its factorization.

80408665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846431.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 80408665 is about 8967.0878773435. The cubic root of 80408665 is about 431.6193939245.

The spelling of 80408665 in words is "eighty million, four hundred eight thousand, six hundred sixty-five".