23692561 has 2 divisors, whose sum is σ = 23692562. Its totient is φ = 23692560.

The previous prime is 23692549. The next prime is 23692579. The reversal of 23692561 is 16529632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23668225 + 24336 = 4865^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 23692561 - 2⁹ = 23692049 is a prime.

It is a super-2 number, since 2×23692561² = 1122674893477442, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (23692531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11846280 + 11846281.

It is an arithmetic number, because the mean of its divisors is an integer number (11846281).

Almost surely, 2^23692561 is an apocalyptic number.

It is an amenable number.

23692561 is a deficient number, since it is larger than the sum of its proper divisors (1).

23692561 is an equidigital number, since it uses as much as digits as its factorization.

23692561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 23692561 is about 4867.5004879301. The cubic root of 23692561 is about 287.2129399396.

The spelling of 23692561 in words is "twenty-three million, six hundred ninety-two thousand, five hundred sixty-one".