88664440 has 16 divisors (see below), whose sum is σ = 199495080. Its totient is φ = 35465760.

The previous prime is 88664417. The next prime is 88664441. The reversal of 88664440 is 4446688.

It is a super-2 number, since 2×88664440² = 15722765841027200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 2216611 = 88664440 / (8 + 8 + 6 + 6 + 4 + 4 + 4 + 0).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 88664393 and 88664402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88664441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108266 + ... + 1108345.

Almost surely, 2^88664440 is an apocalyptic number.

It is an amenable number.

88664440 is an abundant number, since it is smaller than the sum of its proper divisors (110830640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

88664440 is a wasteful number, since it uses less digits than its factorization.

88664440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216622 (or 2216618 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 88664440 is about 9416.1796924230. The cubic root of 88664440 is about 445.9126830746.

The spelling of 88664440 in words is "eighty-eight million, six hundred sixty-four thousand, four hundred forty".