80067665 has 4 divisors (see below), whose sum is σ = 96081204. Its totient is φ = 64054128.

The previous prime is 80067607. The next prime is 80067679. The reversal of 80067665 is 56676008.

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 28558336 + 51509329 = 5344^2 + 7177^2 .

It is a cyclic number.

It is not a de Polignac number, because 80067665 - 2¹⁸ = 79805521 is a prime.

It is a Duffinian number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 8006762 + ... + 8006771.

It is an arithmetic number, because the mean of its divisors is an integer number (24020301).

Almost surely, 2^80067665 is an apocalyptic number.

It is an amenable number.

80067665 is a deficient number, since it is larger than the sum of its proper divisors (16013539).

80067665 is a wasteful number, since it uses less digits than its factorization.

80067665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16013538.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 80067665 is about 8948.0536989895. The cubic root of 80067665 is about 431.0083869579.

The spelling of 80067665 in words is "eighty million, sixty-seven thousand, six hundred sixty-five".