89673613 has 2 divisors, whose sum is σ = 89673614. Its totient is φ = 89673612.

The previous prime is 89673593. The next prime is 89673637. The reversal of 89673613 is 31637698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81396484 + 8277129 = 9022^2 + 2877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89673613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89673613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89673643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44836806 + 44836807.

It is an arithmetic number, because the mean of its divisors is an integer number (44836807).

Almost surely, 2^89673613 is an apocalyptic number.

It is an amenable number.

89673613 is a deficient number, since it is larger than the sum of its proper divisors (1).

89673613 is an equidigital number, since it uses as much as digits as its factorization.

89673613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 89673613 is about 9469.6152508959. The cubic root of 89673613 is about 447.5980880039.

The spelling of 89673613 in words is "eighty-nine million, six hundred seventy-three thousand, six hundred thirteen".