23568921 has 8 divisors (see below), whose sum is σ = 34916960. Its totient is φ = 15712596.

The previous prime is 23568913. The next prime is 23568971. The reversal of 23568921 is 12986532.

23568921 is a `hidden beast` number, since 2 + 3 + 568 + 92 + 1 = 666.

It is not a de Polignac number, because 23568921 - 2³ = 23568913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23568901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436435 + ... + 436488.

It is an arithmetic number, because the mean of its divisors is an integer number (4364620).

Almost surely, 2^23568921 is an apocalyptic number.

It is an amenable number.

23568921 is a deficient number, since it is larger than the sum of its proper divisors (11348039).

23568921 is an equidigital number, since it uses as much as digits as its factorization.

23568921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872932 (or 872926 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 23568921 is about 4854.7833113333. The cubic root of 23568921 is about 286.7124599340.

The spelling of 23568921 in words is "twenty-three million, five hundred sixty-eight thousand, nine hundred twenty-one".