79530565 has 4 divisors (see below), whose sum is σ = 95436684. Its totient is φ = 63624448.

The previous prime is 79530559. The next prime is 79530601. The reversal of 79530565 is 56503597.

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 44116164 + 35414401 = 6642^2 + 5951^2 .

It is a cyclic number.

It is not a de Polignac number, because 79530565 - 2¹¹ = 79528517 is a prime.

It is a super-2 number, since 2×79530565² = 12650221538438450, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 7953052 + ... + 7953061.

It is an arithmetic number, because the mean of its divisors is an integer number (23859171).

Almost surely, 2^79530565 is an apocalyptic number.

It is an amenable number.

79530565 is a deficient number, since it is larger than the sum of its proper divisors (15906119).

79530565 is a wasteful number, since it uses less digits than its factorization.

79530565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15906118.

The product of its (nonzero) digits is 141750, while the sum is 40.

The square root of 79530565 is about 8917.9910854407. The cubic root of 79530565 is about 430.0424782265.

The spelling of 79530565 in words is "seventy-nine million, five hundred thirty thousand, five hundred sixty-five".