89564013 has 72 divisors (see below), whose sum is σ = 168948000. Its totient is φ = 45178560.

The previous prime is 89564009. The next prime is 89564017. The reversal of 89564013 is 31046598.

89564013 is a `hidden beast` number, since 8 + 9 + 5 + 640 + 1 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (89564009) and next prime (89564017).

It is not a de Polignac number, because 89564013 - 2² = 89564009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89564017) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 179238 + ... + 179736.

It is an arithmetic number, because the mean of its divisors is an integer number (2346500).

Almost surely, 2^89564013 is an apocalyptic number.

It is an amenable number.

89564013 is a deficient number, since it is larger than the sum of its proper divisors (79383987).

89564013 is a wasteful number, since it uses less digits than its factorization.

89564013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 89564013 is about 9463.8265516650. The cubic root of 89564013 is about 447.4156606868.

The spelling of 89564013 in words is "eighty-nine million, five hundred sixty-four thousand, thirteen".