89168645 has 18 divisors (see below), whose sum is σ = 110750994. Its totient is φ = 68919360.

The previous prime is 89168609. The next prime is 89168659. The reversal of 89168645 is 54686198.

It can be written as a sum of positive squares in 3 ways, for example, as 5134756 + 84033889 = 2266^2 + 9167^2 .

It is not a de Polignac number, because 89168645 - 2⁶ = 89168581 is a prime.

It is a super-2 number, since 2×89168645² = 15902094502272050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89168645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 865664 + ... + 865766.

It is an arithmetic number, because the mean of its divisors is an integer number (6152833).

Almost surely, 2^89168645 is an apocalyptic number.

It is an amenable number.

89168645 is a deficient number, since it is larger than the sum of its proper divisors (21582349).

89168645 is an equidigital number, since it uses as much as digits as its factorization.

89168645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 149 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 89168645 is about 9442.9150689816. The cubic root of 89168645 is about 446.7563379656.

Multiplying 89168645 by its product of digits (414720), we get a square (36980020454400 = 6081120²).

The spelling of 89168645 in words is "eighty-nine million, one hundred sixty-eight thousand, six hundred forty-five".