23666669 has 8 divisors (see below), whose sum is σ = 26986680. Its totient is φ = 20560896.

The previous prime is 23666627. The next prime is 23666677. The reversal of 23666669 is 96666632.

It can be written as a sum of positive squares in 4 ways, for example, as 289444 + 23377225 = 538^2 + 4835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23666669 - 2²⁴ = 6889453 is a prime.

It is a super-2 number, since 2×23666669² = 1120222443111122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23666689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53324 + ... + 53765.

It is an arithmetic number, because the mean of its divisors is an integer number (3373335).

Almost surely, 2^23666669 is an apocalyptic number.

It is an amenable number.

23666669 is a deficient number, since it is larger than the sum of its proper divisors (3320011).

23666669 is a wasteful number, since it uses less digits than its factorization.

23666669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107119.

The product of its digits is 419904, while the sum is 44.

The square root of 23666669 is about 4864.8400795915. The cubic root of 23666669 is about 287.1082765948.

The spelling of 23666669 in words is "twenty-three million, six hundred sixty-six thousand, six hundred sixty-nine".