89564 has 6 divisors (see below), whose sum is σ = 156744. Its totient is φ = 44780.

The previous prime is 89563. The next prime is 89567. The reversal of 89564 is 46598.

It is a self number, because there is not a number n which added to its sum of digits gives 89564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11192 + ... + 11199.

It is an arithmetic number, because the mean of its divisors is an integer number (26124).

2⁸⁹⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

89564 is a deficient number, since it is larger than the sum of its proper divisors (67180).

89564 is a wasteful number, since it uses less digits than its factorization.

89564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22395 (or 22393 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 89564 is about 299.2724511210. The cubic root of 89564 is about 44.7415639040.

It can be divided in two parts, 895 and 64, that added together give a palindrome (959).

The spelling of 89564 in words is "eighty-nine thousand, five hundred sixty-four".