88661099 has 4 divisors (see below), whose sum is σ = 88716264. Its totient is φ = 88605936.

The previous prime is 88661093. The next prime is 88661101. The reversal of 88661099 is 99016688.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88661099 - 2²⁰ = 87612523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88661093) 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, 25097 + ... + 28410.

It is an arithmetic number, because the mean of its divisors is an integer number (22179066).

Almost surely, 2^88661099 is an apocalyptic number.

88661099 is a deficient number, since it is larger than the sum of its proper divisors (55165).

88661099 is a wasteful number, since it uses less digits than its factorization.

88661099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55164.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 88661099 is about 9416.0022833472. The cubic root of 88661099 is about 445.9070821333.

The spelling of 88661099 in words is "eighty-eight million, six hundred sixty-one thousand, ninety-nine".