89415664 has 40 divisors (see below), whose sum is σ = 190112832. Its totient is φ = 40485120.

The previous prime is 89415661. The next prime is 89415673. The reversal of 89415664 is 46651498.

It is a self number, because there is not a number n which added to its sum of digits gives 89415664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89415661) 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, 6969 + ... + 15079.

Almost surely, 2^89415664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89415664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95056416).

89415664 is an abundant number, since it is smaller than the sum of its proper divisors (100697168).

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

89415664 is a wasteful number, since it uses less digits than its factorization.

89415664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8185 (or 8179 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 89415664 is about 9455.9856175864. The cubic root of 89415664 is about 447.1684991193.

The spelling of 89415664 in words is "eighty-nine million, four hundred fifteen thousand, six hundred sixty-four".