88638669 has 24 divisors (see below), whose sum is σ = 147630912. Its totient is φ = 50198400.

The previous prime is 88638659. The next prime is 88638689. The reversal of 88638669 is 96683688.

It is not a de Polignac number, because 88638669 - 2⁵ = 88638637 is a prime.

It is a super-2 number, since 2×88638669² = 15713627284183122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88638659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 894 + ... + 13344.

It is an arithmetic number, because the mean of its divisors is an integer number (6151288).

Almost surely, 2^88638669 is an apocalyptic number.

It is an amenable number.

88638669 is a deficient number, since it is larger than the sum of its proper divisors (58992243).

88638669 is a wasteful number, since it uses less digits than its factorization.

88638669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12577 (or 12574 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 88638669 is about 9414.8111505224. The cubic root of 88638669 is about 445.8694762403.

The spelling of 88638669 in words is "eighty-eight million, six hundred thirty-eight thousand, six hundred sixty-nine".