89997623 has 4 divisors (see below), whose sum is σ = 94734360. Its totient is φ = 85260888.

The previous prime is 89997617. The next prime is 89997641. The reversal of 89997623 is 32679998.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89997623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89997613) 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, 2368340 + ... + 2368377.

It is an arithmetic number, because the mean of its divisors is an integer number (23683590).

Almost surely, 2^89997623 is an apocalyptic number.

89997623 is a deficient number, since it is larger than the sum of its proper divisors (4736737).

89997623 is a wasteful number, since it uses less digits than its factorization.

89997623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736736.

The product of its digits is 1469664, while the sum is 53.

The square root of 89997623 is about 9486.7077007780. The cubic root of 89997623 is about 448.1365293250.

The spelling of 89997623 in words is "eighty-nine million, nine hundred ninety-seven thousand, six hundred twenty-three".