23646664 has 8 divisors (see below), whose sum is σ = 44337510. Its totient is φ = 11823328.

The previous prime is 23646661. The next prime is 23646673. The reversal of 23646664 is 46664632.

It can be written as a sum of positive squares in only one way, i.e., 13032100 + 10614564 = 3610^2 + 3258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23646661) 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 as a sum of consecutive naturals, namely, 1477909 + ... + 1477924.

Almost surely, 2^23646664 is an apocalyptic number.

It is an amenable number.

23646664 is a deficient number, since it is larger than the sum of its proper divisors (20690846).

23646664 is a wasteful number, since it uses less digits than its factorization.

23646664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955839 (or 2955835 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The square root of 23646664 is about 4862.7835649965. The cubic root of 23646664 is about 287.0273580091.

It can be divided in two parts, 23646 and 664, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 23646664 in words is "twenty-three million, six hundred forty-six thousand, six hundred sixty-four".