23566997 has 2 divisors, whose sum is σ = 23566998. Its totient is φ = 23566996.

The previous prime is 23566993. The next prime is 23567003. The reversal of 23566997 is 79966532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16982641 + 6584356 = 4121^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 23566997 - 2² = 23566993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23566993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11783498 + 11783499.

It is an arithmetic number, because the mean of its divisors is an integer number (11783499).

Almost surely, 2^23566997 is an apocalyptic number.

It is an amenable number.

23566997 is a deficient number, since it is larger than the sum of its proper divisors (1).

23566997 is an equidigital number, since it uses as much as digits as its factorization.

23566997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 47.

The square root of 23566997 is about 4854.5851522040. The cubic root of 23566997 is about 286.7046579959.

The spelling of 23566997 in words is "twenty-three million, five hundred sixty-six thousand, nine hundred ninety-seven".