23617889 has 2 divisors, whose sum is σ = 23617890. Its totient is φ = 23617888.

The previous prime is 23617883. The next prime is 23617943. The reversal of 23617889 is 98871632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 10837264 = 3575^2 + 3292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23617889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23617883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11808944 + 11808945.

It is an arithmetic number, because the mean of its divisors is an integer number (11808945).

Almost surely, 2^23617889 is an apocalyptic number.

It is an amenable number.

23617889 is a deficient number, since it is larger than the sum of its proper divisors (1).

23617889 is an equidigital number, since it uses as much as digits as its factorization.

23617889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 23617889 is about 4859.8239680054. The cubic root of 23617889 is about 286.9108854187.

The spelling of 23617889 in words is "twenty-three million, six hundred seventeen thousand, eight hundred eighty-nine".