89636521 has 8 divisors (see below), whose sum is σ = 96687360. Its totient is φ = 82607952.

The previous prime is 89636507. The next prime is 89636527. The reversal of 89636521 is 12563698.

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 89636521 - 2²¹ = 87539369 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89636527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3336 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (12085920).

Almost surely, 2^89636521 is an apocalyptic number.

It is an amenable number.

89636521 is a deficient number, since it is larger than the sum of its proper divisors (7050839).

89636521 is a wasteful number, since it uses less digits than its factorization.

89636521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11135.

The product of its digits is 77760, while the sum is 40.

The square root of 89636521 is about 9467.6565738307. The cubic root of 89636521 is about 447.5363656558.

The spelling of 89636521 in words is "eighty-nine million, six hundred thirty-six thousand, five hundred twenty-one".