89722613 has 4 divisors (see below), whose sum is σ = 90095148. Its totient is φ = 89350080.

The previous prime is 89722601. The next prime is 89722627. The reversal of 89722613 is 31622798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31622798 = 2 ⋅15811399.

It can be written as a sum of positive squares in 2 ways, for example, as 78446449 + 11276164 = 8857^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 89722613 - 2⁴ = 89722597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89722663) 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, 185906 + ... + 186387.

It is an arithmetic number, because the mean of its divisors is an integer number (22523787).

Almost surely, 2^89722613 is an apocalyptic number.

It is an amenable number.

89722613 is a deficient number, since it is larger than the sum of its proper divisors (372535).

89722613 is a wasteful number, since it uses less digits than its factorization.

89722613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372534.

The product of its digits is 36288, while the sum is 38.

The square root of 89722613 is about 9472.2021198874. The cubic root of 89722613 is about 447.6795995806.

The spelling of 89722613 in words is "eighty-nine million, seven hundred twenty-two thousand, six hundred thirteen".