23257617 has 4 divisors (see below), whose sum is σ = 31010160. Its totient is φ = 15505076.

The previous prime is 23257613. The next prime is 23257651. The reversal of 23257617 is 71675232.

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 23257617 - 2² = 23257613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23257613) 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, 3876267 + ... + 3876272.

It is an arithmetic number, because the mean of its divisors is an integer number (7752540).

Almost surely, 2^23257617 is an apocalyptic number.

It is an amenable number.

23257617 is a deficient number, since it is larger than the sum of its proper divisors (7752543).

23257617 is an equidigital number, since it uses as much as digits as its factorization.

23257617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752542.

The product of its digits is 17640, while the sum is 33.

The square root of 23257617 is about 4822.6151619220. The cubic root of 23257617 is about 285.4445386341. Note that the first 3 decimals are identical.

The spelling of 23257617 in words is "twenty-three million, two hundred fifty-seven thousand, six hundred seventeen".