88666645 has 24 divisors (see below), whose sum is σ = 115736544. Its totient is φ = 65162496.

The previous prime is 88666637. The next prime is 88666649. The reversal of 88666645 is 54666688.

It is a happy number.

88666645 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 88666645 - 2³ = 88666637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88666649) 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, 61422 + ... + 62848.

It is an arithmetic number, because the mean of its divisors is an integer number (4822356).

Almost surely, 2^88666645 is an apocalyptic number.

88666645 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

88666645 is a deficient number, since it is larger than the sum of its proper divisors (27069899).

88666645 is a wasteful number, since it uses less digits than its factorization.

88666645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1492 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The square root of 88666645 is about 9416.2967773961. The cubic root of 88666645 is about 445.9163795183.

The spelling of 88666645 in words is "eighty-eight million, six hundred sixty-six thousand, six hundred forty-five".