23663641 has 2 divisors, whose sum is σ = 23663642. Its totient is φ = 23663640.

The previous prime is 23663597. The next prime is 23663659. The reversal of 23663641 is 14636632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23078416 + 585225 = 4804^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 23663641 - 2¹⁷ = 23532569 is a prime.

It is not a weakly prime, because it can be changed into another prime (23663671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11831820 + 11831821.

It is an arithmetic number, because the mean of its divisors is an integer number (11831821).

Almost surely, 2^23663641 is an apocalyptic number.

It is an amenable number.

23663641 is a deficient number, since it is larger than the sum of its proper divisors (1).

23663641 is an equidigital number, since it uses as much as digits as its factorization.

23663641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 31.

The square root of 23663641 is about 4864.5288569398. The cubic root of 23663641 is about 287.0960315124.

The spelling of 23663641 in words is "twenty-three million, six hundred sixty-three thousand, six hundred forty-one".