89718515 has 16 divisors (see below), whose sum is σ = 113246208. Its totient is φ = 68102496.

The previous prime is 89718509. The next prime is 89718521. The reversal of 89718515 is 51581798.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89718509) and next prime (89718521).

It is a cyclic number.

It is not a de Polignac number, because 89718515 - 2⁸ = 89718259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11534 + ... + 17676.

It is an arithmetic number, because the mean of its divisors is an integer number (7077888).

Almost surely, 2^89718515 is an apocalyptic number.

89718515 is a deficient number, since it is larger than the sum of its proper divisors (23527693).

89718515 is a wasteful number, since it uses less digits than its factorization.

89718515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6298.

The product of its digits is 100800, while the sum is 44.

The square root of 89718515 is about 9471.9858002427. The cubic root of 89718515 is about 447.6727836885.

The spelling of 89718515 in words is "eighty-nine million, seven hundred eighteen thousand, five hundred fifteen".