80770565 has 8 divisors (see below), whose sum is σ = 96975360. Its totient is φ = 64582672.

The previous prime is 80770561. The next prime is 80770579. The reversal of 80770565 is 56507708.

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 80770565 - 2² = 80770561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80770561) 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 7 ways as a sum of consecutive naturals, for example, 11876 + ... + 17394.

It is an arithmetic number, because the mean of its divisors is an integer number (12121920).

Almost surely, 2^80770565 is an apocalyptic number.

It is an amenable number.

80770565 is a deficient number, since it is larger than the sum of its proper divisors (16204795).

80770565 is a wasteful number, since it uses less digits than its factorization.

80770565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8451.

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

The square root of 80770565 is about 8987.2445721700. The cubic root of 80770565 is about 432.2659631252.

The spelling of 80770565 in words is "eighty million, seven hundred seventy thousand, five hundred sixty-five".