80608665 has 16 divisors (see below), whose sum is σ = 132120576. Its totient is φ = 41942400.

The previous prime is 80608639. The next prime is 80608669. The reversal of 80608665 is 56680608.

80608665 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 80608665 - 2¹⁰ = 80607641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80608669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64921 + ... + 66150.

It is an arithmetic number, because the mean of its divisors is an integer number (8257536).

Almost surely, 2^80608665 is an apocalyptic number.

It is an amenable number.

80608665 is a deficient number, since it is larger than the sum of its proper divisors (51511911).

80608665 is a wasteful number, since it uses less digits than its factorization.

80608665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131120.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 80608665 is about 8978.2328439398. The cubic root of 80608665 is about 431.9769524313.

The spelling of 80608665 in words is "eighty million, six hundred eight thousand, six hundred sixty-five".