89666131 has 2 divisors, whose sum is σ = 89666132. Its totient is φ = 89666130.

The previous prime is 89666123. The next prime is 89666153. The reversal of 89666131 is 13166698.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89666131 - 2³ = 89666123 is a prime.

It is a super-2 number, since 2×89666131² = 16080030097018322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89666531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44833065 + 44833066.

It is an arithmetic number, because the mean of its divisors is an integer number (44833066).

Almost surely, 2^89666131 is an apocalyptic number.

89666131 is a deficient number, since it is larger than the sum of its proper divisors (1).

89666131 is an equidigital number, since it uses as much as digits as its factorization.

89666131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 89666131 is about 9469.2201896460. The cubic root of 89666131 is about 447.5856390723.

The spelling of 89666131 in words is "eighty-nine million, six hundred sixty-six thousand, one hundred thirty-one".