89172664 has 32 divisors (see below), whose sum is σ = 196253280. Its totient is φ = 37183104.

The previous prime is 89172661. The next prime is 89172673. The reversal of 89172664 is 46627198.

It is a self number, because there is not a number n which added to its sum of digits gives 89172664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89172661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19447 + ... + 23590.

It is an arithmetic number, because the mean of its divisors is an integer number (6132915).

Almost surely, 2^89172664 is an apocalyptic number.

It is an amenable number.

89172664 is an abundant number, since it is smaller than the sum of its proper divisors (107080616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89172664 is a wasteful number, since it uses less digits than its factorization.

89172664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43087 (or 43083 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 89172664 is about 9443.1278716324. The cubic root of 89172664 is about 446.7630499167.

The spelling of 89172664 in words is "eighty-nine million, one hundred seventy-two thousand, six hundred sixty-four".