89078565 has 16 divisors (see below), whose sum is σ = 143353728. Its totient is φ = 47232576.

The previous prime is 89078557. The next prime is 89078579. The reversal of 89078565 is 56587098.

It is not a de Polignac number, because 89078565 - 2³ = 89078557 is a prime.

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

It is a Curzon 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, 14569 + ... + 19758.

It is an arithmetic number, because the mean of its divisors is an integer number (8959608).

Almost surely, 2^89078565 is an apocalyptic number.

It is an amenable number.

89078565 is a deficient number, since it is larger than the sum of its proper divisors (54275163).

89078565 is a wasteful number, since it uses less digits than its factorization.

89078565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34508.

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 89078565 is about 9438.1441502024. The cubic root of 89078565 is about 446.6058464625.

The spelling of 89078565 in words is "eighty-nine million, seventy-eight thousand, five hundred sixty-five".