89605687 has 4 divisors (see below), whose sum is σ = 90142416. Its totient is φ = 89068960.

The previous prime is 89605673. The next prime is 89605693. The reversal of 89605687 is 78650698.

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

It is a cyclic number.

It is not a de Polignac number, because 89605687 - 2²³ = 81217079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89605687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89605667) 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, 268114 + ... + 268447.

It is an arithmetic number, because the mean of its divisors is an integer number (22535604).

Almost surely, 2^89605687 is an apocalyptic number.

89605687 is a deficient number, since it is larger than the sum of its proper divisors (536729).

89605687 is a wasteful number, since it uses less digits than its factorization.

89605687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536728.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 89605687 is about 9466.0280477083. The cubic root of 89605687 is about 447.4850438704.

The spelling of 89605687 in words is "eighty-nine million, six hundred five thousand, six hundred eighty-seven".