23165977 has 2 divisors, whose sum is σ = 23165978. Its totient is φ = 23165976.

The previous prime is 23165969. The next prime is 23165981. The reversal of 23165977 is 77956132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 1038361 = 4704^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 23165977 - 2³ = 23165969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23165927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11582988 + 11582989.

It is an arithmetic number, because the mean of its divisors is an integer number (11582989).

Almost surely, 2^23165977 is an apocalyptic number.

It is an amenable number.

23165977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23165977 is an equidigital number, since it uses as much as digits as its factorization.

23165977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 23165977 is about 4813.1047152540. The cubic root of 23165977 is about 285.0691409146.

It can be divided in two parts, 23165 and 977, that added together give a palindrome (24142).

The spelling of 23165977 in words is "twenty-three million, one hundred sixty-five thousand, nine hundred seventy-seven".