89624721 has 8 divisors (see below), whose sum is σ = 124695360. Its totient is φ = 57151952.

The previous prime is 89624713. The next prime is 89624737. The reversal of 89624721 is 12742698.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89624721 - 2³ = 89624713 is a prime.

It is a super-2 number, since 2×89624721² = 16065181228655682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89624721.

It is not an unprimeable number, because it can be changed into a prime (89624021) 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, 649386 + ... + 649523.

It is an arithmetic number, because the mean of its divisors is an integer number (15586920).

Almost surely, 2^89624721 is an apocalyptic number.

It is an amenable number.

89624721 is a deficient number, since it is larger than the sum of its proper divisors (35070639).

89624721 is a wasteful number, since it uses less digits than its factorization.

89624721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298935.

The product of its digits is 48384, while the sum is 39.

The square root of 89624721 is about 9467.0333790475. The cubic root of 89624721 is about 447.5167264849.

The spelling of 89624721 in words is "eighty-nine million, six hundred twenty-four thousand, seven hundred twenty-one".