23456643 has 12 divisors (see below), whose sum is σ = 36381960. Its totient is φ = 13403712.

The previous prime is 23456627. The next prime is 23456669. The reversal of 23456643 is 34665432.

It is not a de Polignac number, because 23456643 - 2⁴ = 23456627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23456603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79638 + ... + 79931.

It is an arithmetic number, because the mean of its divisors is an integer number (3031830).

Almost surely, 2^23456643 is an apocalyptic number.

23456643 is a deficient number, since it is larger than the sum of its proper divisors (12925317).

23456643 is a wasteful number, since it uses less digits than its factorization.

23456643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159586 (or 159579 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

The square root of 23456643 is about 4843.2058597586. The cubic root of 23456643 is about 286.2564532657.

The spelling of 23456643 in words is "twenty-three million, four hundred fifty-six thousand, six hundred forty-three".