23663664 has 150 divisors (see below), whose sum is σ = 74494860. Its totient is φ = 7231680.

The previous prime is 23663659. The next prime is 23663671. The reversal of 23663664 is 46636632.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 763329 + ... + 763359.

Almost surely, 2^23663664 is an apocalyptic number.

23663664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23663664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37247430).

23663664 is an abundant number, since it is smaller than the sum of its proper divisors (50831196).

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

23663664 is a wasteful number, since it uses less digits than its factorization.

23663664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 55 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 23663664 is about 4864.5312209914. The cubic root of 23663664 is about 287.0961245272.

The spelling of 23663664 in words is "twenty-three million, six hundred sixty-three thousand, six hundred sixty-four".