80715805 has 8 divisors (see below), whose sum is σ = 96993792. Its totient is φ = 64482768.

The previous prime is 80715799. The next prime is 80715821. The reversal of 80715805 is 50851708.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80715805 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 7149 + ... + 14578.

It is an arithmetic number, because the mean of its divisors is an integer number (12124224).

Almost surely, 2^80715805 is an apocalyptic number.

It is an amenable number.

80715805 is a deficient number, since it is larger than the sum of its proper divisors (16277987).

80715805 is a wasteful number, since it uses less digits than its factorization.

80715805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22475.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 80715805 is about 8984.1975156382. The cubic root of 80715805 is about 432.1682532910.

The spelling of 80715805 in words is "eighty million, seven hundred fifteen thousand, eight hundred five".