88515689 has 4 divisors (see below), whose sum is σ = 88783440. Its totient is φ = 88247940.

The previous prime is 88515673. The next prime is 88515709. The reversal of 88515689 is 98651588.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88515689 - 2⁴ = 88515673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88515619) 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, 133379 + ... + 134040.

It is an arithmetic number, because the mean of its divisors is an integer number (22195860).

Almost surely, 2^88515689 is an apocalyptic number.

It is an amenable number.

88515689 is a deficient number, since it is larger than the sum of its proper divisors (267751).

88515689 is a wasteful number, since it uses less digits than its factorization.

88515689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267750.

The product of its digits is 691200, while the sum is 50.

The square root of 88515689 is about 9408.2776851026. The cubic root of 88515689 is about 445.6631764866.

The spelling of 88515689 in words is "eighty-eight million, five hundred fifteen thousand, six hundred eighty-nine".