23972617 has 4 divisors (see below), whose sum is σ = 24008400. Its totient is φ = 23936836.

The previous prime is 23972603. The next prime is 23972621. The reversal of 23972617 is 71627932.

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 23972617 - 2⁷ = 23972489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23972687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16867 + ... + 18232.

It is an arithmetic number, because the mean of its divisors is an integer number (6002100).

Almost surely, 2^23972617 is an apocalyptic number.

It is an amenable number.

23972617 is a deficient number, since it is larger than the sum of its proper divisors (35783).

23972617 is an equidigital number, since it uses as much as digits as its factorization.

23972617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35782.

The product of its digits is 31752, while the sum is 37.

The square root of 23972617 is about 4896.1839221990. The cubic root of 23972617 is about 288.3401692017.

The spelling of 23972617 in words is "twenty-three million, nine hundred seventy-two thousand, six hundred seventeen".