89973565 has 16 divisors (see below), whose sum is σ = 118357056. Its totient is φ = 65116800.

The previous prime is 89973553. The next prime is 89973581. The reversal of 89973565 is 56537998.

It is not a de Polignac number, because 89973565 - 2⁷ = 89973437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7729 + ... + 15481.

It is an arithmetic number, because the mean of its divisors is an integer number (7397316).

Almost surely, 2^89973565 is an apocalyptic number.

It is an amenable number.

89973565 is a deficient number, since it is larger than the sum of its proper divisors (28383491).

89973565 is a wasteful number, since it uses less digits than its factorization.

89973565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7980.

The product of its digits is 2041200, while the sum is 52.

The square root of 89973565 is about 9485.4396313508. The cubic root of 89973565 is about 448.0965940872.

The spelling of 89973565 in words is "eighty-nine million, nine hundred seventy-three thousand, five hundred sixty-five".