88644689 has 8 divisors (see below), whose sum is σ = 101578560. Its totient is φ = 75778416.

The previous prime is 88644653. The next prime is 88644739. The reversal of 88644689 is 98644688.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 88644689 - 2⁸ = 88644433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88644689.

It is not an unprimeable number, because it can be changed into a prime (88644289) 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 7 ways as a sum of consecutive naturals, for example, 14054 + ... + 19359.

It is an arithmetic number, because the mean of its divisors is an integer number (12697320).

Almost surely, 2^88644689 is an apocalyptic number.

It is an amenable number.

88644689 is a deficient number, since it is larger than the sum of its proper divisors (12933871).

88644689 is a wasteful number, since it uses less digits than its factorization.

88644689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33799.

The product of its digits is 2654208, while the sum is 53.

The square root of 88644689 is about 9415.1308541093. The cubic root of 88644689 is about 445.8795699293.

Subtracting 88644689 from its reverse (98644688), we obtain a palindrome (9999999).

The spelling of 88644689 in words is "eighty-eight million, six hundred forty-four thousand, six hundred eighty-nine".