89651664 has 80 divisors (see below), whose sum is σ = 259358400. Its totient is φ = 29649024.

The previous prime is 89651657. The next prime is 89651699. The reversal of 89651664 is 46615698.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59302 + ... + 60794.

It is an arithmetic number, because the mean of its divisors is an integer number (3241980).

Almost surely, 2^89651664 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 89651664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129679200).

89651664 is an abundant number, since it is smaller than the sum of its proper divisors (169706736).

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

89651664 is a wasteful number, since it uses less digits than its factorization.

89651664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1637 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 89651664 is about 9468.4562627706. The cubic root of 89651664 is about 447.5615661786.

The spelling of 89651664 in words is "eighty-nine million, six hundred fifty-one thousand, six hundred sixty-four".