88639641 has 24 divisors (see below), whose sum is σ = 131720160. Its totient is φ = 57407616.

The previous prime is 88639627. The next prime is 88639651. The reversal of 88639641 is 14693688.

88639641 is a `hidden beast` number, since 8 + 8 + 639 + 6 + 4 + 1 = 666.

It is not a de Polignac number, because 88639641 - 2⁹ = 88639129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88639651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87345 + ... + 88353.

It is an arithmetic number, because the mean of its divisors is an integer number (5488340).

Almost surely, 2^88639641 is an apocalyptic number.

It is an amenable number.

88639641 is a deficient number, since it is larger than the sum of its proper divisors (43080519).

88639641 is a wasteful number, since it uses less digits than its factorization.

88639641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1282 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 88639641 is about 9414.8627711720. The cubic root of 88639641 is about 445.8711060164.

The spelling of 88639641 in words is "eighty-eight million, six hundred thirty-nine thousand, six hundred forty-one".