89666137 has 16 divisors (see below), whose sum is σ = 100793088. Its totient is φ = 79062480.

The previous prime is 89666131. The next prime is 89666153. The reversal of 89666137 is 73166698.

It is a cyclic number.

It is not a de Polignac number, because 89666137 - 2²³ = 81277529 is a prime.

It is a super-2 number, since 2×89666137² = 16080032249005538, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 89666137 parts by 13391 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (89666131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76518 + ... + 77680.

It is an arithmetic number, because the mean of its divisors is an integer number (6299568).

Almost surely, 2^89666137 is an apocalyptic number.

It is an amenable number.

89666137 is a deficient number, since it is larger than the sum of its proper divisors (11126951).

89666137 is a wasteful number, since it uses less digits than its factorization.

89666137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380.

The product of its digits is 326592, while the sum is 46.

The square root of 89666137 is about 9469.2205064620. The cubic root of 89666137 is about 447.5856490557.

It can be divided in two parts, 896661 and 37, that added together give a palindrome (896698).

The spelling of 89666137 in words is "eighty-nine million, six hundred sixty-six thousand, one hundred thirty-seven".