23456661 has 4 divisors (see below), whose sum is σ = 31275552. Its totient is φ = 15637772.

The previous prime is 23456627. The next prime is 23456669. The reversal of 23456661 is 16665432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23456661 - 2⁶ = 23456597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23456669) 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, 3909441 + ... + 3909446.

It is an arithmetic number, because the mean of its divisors is an integer number (7818888).

Almost surely, 2^23456661 is an apocalyptic number.

It is an amenable number.

23456661 is a deficient number, since it is larger than the sum of its proper divisors (7818891).

23456661 is an equidigital number, since it uses as much as digits as its factorization.

23456661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7818890.

The product of its digits is 25920, while the sum is 33.

The square root of 23456661 is about 4843.2077180315. The cubic root of 23456661 is about 286.2565264875.

The spelling of 23456661 in words is "twenty-three million, four hundred fifty-six thousand, six hundred sixty-one".