23666743 has 4 divisors (see below), whose sum is σ = 23678248. Its totient is φ = 23655240.

The previous prime is 23666711. The next prime is 23666749. The reversal of 23666743 is 34766632.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23666743 - 2⁵ = 23666711 is a prime.

It is a super-2 number, since 2×23666743² = 1120229448456098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23666749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728 + ... + 7093.

It is an arithmetic number, because the mean of its divisors is an integer number (5919562).

Almost surely, 2^23666743 is an apocalyptic number.

23666743 is a deficient number, since it is larger than the sum of its proper divisors (11505).

23666743 is an equidigital number, since it uses as much as digits as its factorization.

23666743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11504.

The product of its digits is 108864, while the sum is 37.

The square root of 23666743 is about 4864.8476851799. The cubic root of 23666743 is about 287.1085758341.

The spelling of 23666743 in words is "twenty-three million, six hundred sixty-six thousand, seven hundred forty-three".