23661923 has 4 divisors (see below), whose sum is σ = 23674320. Its totient is φ = 23649528.

The previous prime is 23661919. The next prime is 23661929. The reversal of 23661923 is 32916632.

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 23661923 - 2² = 23661919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23661923.

It is not an unprimeable number, because it can be changed into a prime (23661929) 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, 2663 + ... + 7376.

It is an arithmetic number, because the mean of its divisors is an integer number (5918580).

Almost surely, 2^23661923 is an apocalyptic number.

23661923 is a deficient number, since it is larger than the sum of its proper divisors (12397).

23661923 is a wasteful number, since it uses less digits than its factorization.

23661923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12396.

The product of its digits is 11664, while the sum is 32.

The square root of 23661923 is about 4864.3522693160. The cubic root of 23661923 is about 287.0890835407.

The spelling of 23661923 in words is "twenty-three million, six hundred sixty-one thousand, nine hundred twenty-three".