23666693 has 2 divisors, whose sum is σ = 23666694. Its totient is φ = 23666692.

The previous prime is 23666689. The next prime is 23666711. The reversal of 23666693 is 39666632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19201924 + 4464769 = 4382^2 + 2113^2 .

It is a cyclic number.

It is not a de Polignac number, because 23666693 - 2² = 23666689 is a prime.

It is a super-2 number, since 2×23666693² = 1120224715112498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23666693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23666593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11833346 + 11833347.

It is an arithmetic number, because the mean of its divisors is an integer number (11833347).

Almost surely, 2^23666693 is an apocalyptic number.

It is an amenable number.

23666693 is a deficient number, since it is larger than the sum of its proper divisors (1).

23666693 is an equidigital number, since it uses as much as digits as its factorization.

23666693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 41.

The square root of 23666693 is about 4864.8425462701. The cubic root of 23666693 is about 287.1083736455.

The spelling of 23666693 in words is "twenty-three million, six hundred sixty-six thousand, six hundred ninety-three".