80608565 has 4 divisors (see below), whose sum is σ = 96730284. Its totient is φ = 64486848.

The previous prime is 80608559. The next prime is 80608589. The reversal of 80608565 is 56580608.

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 20994724 + 59613841 = 4582^2 + 7721^2 .

It is a cyclic number.

It is not a de Polignac number, because 80608565 - 2⁸ = 80608309 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8060852 + ... + 8060861.

It is an arithmetic number, because the mean of its divisors is an integer number (24182571).

Almost surely, 2^80608565 is an apocalyptic number.

It is an amenable number.

80608565 is a deficient number, since it is larger than the sum of its proper divisors (16121719).

80608565 is a wasteful number, since it uses less digits than its factorization.

80608565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16121718.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 80608565 is about 8978.2272749135. The cubic root of 80608565 is about 431.9767737999.

The spelling of 80608565 in words is "eighty million, six hundred eight thousand, five hundred sixty-five".