23716591 has 2 divisors, whose sum is σ = 23716592. Its totient is φ = 23716590.

The previous prime is 23716571. The next prime is 23716603. The reversal of 23716591 is 19561732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23716591 - 2⁵ = 23716559 is a prime.

It is a super-2 number, since 2×23716591² = 1124953377322562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23716531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11858295 + 11858296.

It is an arithmetic number, because the mean of its divisors is an integer number (11858296).

Almost surely, 2^23716591 is an apocalyptic number.

23716591 is a deficient number, since it is larger than the sum of its proper divisors (1).

23716591 is an equidigital number, since it uses as much as digits as its factorization.

23716591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 23716591 is about 4869.9682750507. The cubic root of 23716591 is about 287.3100083109.

The spelling of 23716591 in words is "twenty-three million, seven hundred sixteen thousand, five hundred ninety-one".