23668647 has 4 divisors (see below), whose sum is σ = 31558200. Its totient is φ = 15779096.

The previous prime is 23668639. The next prime is 23668651. The reversal of 23668647 is 74686632.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23668647 - 2³ = 23668639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23668599 and 23668608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23668627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3944772 + ... + 3944777.

It is an arithmetic number, because the mean of its divisors is an integer number (7889550).

Almost surely, 2^23668647 is an apocalyptic number.

23668647 is a deficient number, since it is larger than the sum of its proper divisors (7889553).

23668647 is an equidigital number, since it uses as much as digits as its factorization.

23668647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7889552.

The product of its digits is 290304, while the sum is 42.

The square root of 23668647 is about 4865.0433708241. The cubic root of 23668647 is about 287.1162749652.

The spelling of 23668647 in words is "twenty-three million, six hundred sixty-eight thousand, six hundred forty-seven".