23644963 has 2 divisors, whose sum is σ = 23644964. Its totient is φ = 23644962.

The previous prime is 23644921. The next prime is 23644991. The reversal of 23644963 is 36944632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23644963 - 2²¹ = 21547811 is a prime.

It is not a weakly prime, because it can be changed into another prime (23644763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11822481 + 11822482.

It is an arithmetic number, because the mean of its divisors is an integer number (11822482).

Almost surely, 2^23644963 is an apocalyptic number.

23644963 is a deficient number, since it is larger than the sum of its proper divisors (1).

23644963 is an equidigital number, since it uses as much as digits as its factorization.

23644963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The square root of 23644963 is about 4862.6086620249. The cubic root of 23644963 is about 287.0204754986.

The spelling of 23644963 in words is "twenty-three million, six hundred forty-four thousand, nine hundred sixty-three".