23640617 has 48 divisors (see below), whose sum is σ = 33962880. Its totient is φ = 15966720.

The previous prime is 23640613. The next prime is 23640637. The reversal of 23640617 is 71604632.

It is not a de Polignac number, because 23640617 - 2² = 23640613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23640617.

It is not an unprimeable number, because it can be changed into a prime (23640613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209153 + ... + 209265.

It is an arithmetic number, because the mean of its divisors is an integer number (707560).

Almost surely, 2^23640617 is an apocalyptic number.

It is an amenable number.

23640617 is a deficient number, since it is larger than the sum of its proper divisors (10322263).

23640617 is a wasteful number, since it uses less digits than its factorization.

23640617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 23640617 is about 4862.1617620149. The cubic root of 23640617 is about 287.0028894075.

The spelling of 23640617 in words is "twenty-three million, six hundred forty thousand, six hundred seventeen".