89696565 has 80 divisors (see below), whose sum is σ = 190270080. Its totient is φ = 39553920.

The previous prime is 89696543. The next prime is 89696569. The reversal of 89696565 is 56569698.

It is not a de Polignac number, because 89696565 - 2⁹ = 89696053 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89696569) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 81670 + ... + 82760.

It is an arithmetic number, because the mean of its divisors is an integer number (2378376).

Almost surely, 2^89696565 is an apocalyptic number.

It is an amenable number.

89696565 is an abundant number, since it is smaller than the sum of its proper divisors (100573515).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89696565 is a wasteful number, since it uses less digits than its factorization.

89696565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1135 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 89696565 is about 9470.8270494187. The cubic root of 89696565 is about 447.6362723877.

It can be divided in two parts, 896 and 96565, that added together give a triangular number (97461 = T₄₄₁).

The spelling of 89696565 in words is "eighty-nine million, six hundred ninety-six thousand, five hundred sixty-five".