23165643 has 12 divisors (see below), whose sum is σ = 31189928. Its totient is φ = 15293760.

The previous prime is 23165641. The next prime is 23165657. The reversal of 23165643 is 34656132.

It is not a de Polignac number, because 23165643 - 2¹ = 23165641 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 23165643.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23165641) 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, 96003 + ... + 96243.

Almost surely, 2^23165643 is an apocalyptic number.

23165643 is a deficient number, since it is larger than the sum of its proper divisors (8024285).

23165643 is an equidigital number, since it uses as much as digits as its factorization.

23165643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 423 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 23165643 is about 4813.0700181901. The cubic root of 23165643 is about 285.0677708947.

The spelling of 23165643 in words is "twenty-three million, one hundred sixty-five thousand, six hundred forty-three".