89965720 has 64 divisors (see below), whose sum is σ = 225066240. Its totient is φ = 32140800.

The previous prime is 89965699. The next prime is 89965721. The reversal of 89965720 is 2756998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89965721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13330 + ... + 18910.

It is an arithmetic number, because the mean of its divisors is an integer number (3516660).

Almost surely, 2^89965720 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 89965720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112533120).

89965720 is an abundant number, since it is smaller than the sum of its proper divisors (135100520).

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

89965720 is a wasteful number, since it uses less digits than its factorization.

89965720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636 (or 5632 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 89965720 is about 9485.0260937965. The cubic root of 89965720 is about 448.0835701879.

The spelling of 89965720 in words is "eighty-nine million, nine hundred sixty-five thousand, seven hundred twenty".