89861633 has 4 divisors (see below), whose sum is σ = 92960340. Its totient is φ = 86762928.

The previous prime is 89861617. The next prime is 89861669. The reversal of 89861633 is 33616898.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43784689 + 46076944 = 6617^2 + 6788^2 .

It is a cyclic number.

It is not a de Polignac number, because 89861633 - 2⁴ = 89861617 is a prime.

It is a super-2 number, since 2×89861633² = 16150226170853378, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89831633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1549310 + ... + 1549367.

It is an arithmetic number, because the mean of its divisors is an integer number (23240085).

Almost surely, 2^89861633 is an apocalyptic number.

It is an amenable number.

89861633 is a deficient number, since it is larger than the sum of its proper divisors (3098707).

89861633 is a wasteful number, since it uses less digits than its factorization.

89861633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098706.

The product of its digits is 186624, while the sum is 44.

The square root of 89861633 is about 9479.5375942079. The cubic root of 89861633 is about 447.9106981468.

The spelling of 89861633 in words is "eighty-nine million, eight hundred sixty-one thousand, six hundred thirty-three".