23617961 has 2 divisors, whose sum is σ = 23617962. Its totient is φ = 23617960.

The previous prime is 23617949. The next prime is 23617991. The reversal of 23617961 is 16971632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12355225 + 11262736 = 3515^2 + 3356^2 .

It is a cyclic number.

It is not a de Polignac number, because 23617961 - 2¹⁰ = 23616937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23617991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11808980 + 11808981.

It is an arithmetic number, because the mean of its divisors is an integer number (11808981).

Almost surely, 2^23617961 is an apocalyptic number.

It is an amenable number.

23617961 is a deficient number, since it is larger than the sum of its proper divisors (1).

23617961 is an equidigital number, since it uses as much as digits as its factorization.

23617961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 23617961 is about 4859.8313756755. The cubic root of 23617961 is about 286.9111769712.

The spelling of 23617961 in words is "twenty-three million, six hundred seventeen thousand, nine hundred sixty-one".