89996643 has 16 divisors (see below), whose sum is σ = 145449600. Its totient is φ = 54543240.

The previous prime is 89996629. The next prime is 89996659. The reversal of 89996643 is 34669998.

It is a happy number.

It is not a de Polignac number, because 89996643 - 2⁶ = 89996579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89996643.

It is not an unprimeable number, because it can be changed into a prime (89996603) 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, 151213 + ... + 151806.

It is an arithmetic number, because the mean of its divisors is an integer number (9090600).

Almost surely, 2^89996643 is an apocalyptic number.

89996643 is a deficient number, since it is larger than the sum of its proper divisors (55452957).

89996643 is a wasteful number, since it uses less digits than its factorization.

89996643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303039 (or 303033 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 89996643 is about 9486.6560494202. The cubic root of 89996643 is about 448.1349027065.

It can be divided in two parts, 899966 and 43, that added together give a palindrome (900009).

The spelling of 89996643 in words is "eighty-nine million, nine hundred ninety-six thousand, six hundred forty-three".