23666573 has 8 divisors (see below), whose sum is σ = 27205248. Its totient is φ = 20167344.

The previous prime is 23666561. The next prime is 23666579. The reversal of 23666573 is 37566632.

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 23666573 - 2⁸ = 23666317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23666579) 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, 8561 + ... + 10982.

It is an arithmetic number, because the mean of its divisors is an integer number (3400656).

Almost surely, 2^23666573 is an apocalyptic number.

It is an amenable number.

23666573 is a deficient number, since it is larger than the sum of its proper divisors (3538675).

23666573 is a wasteful number, since it uses less digits than its factorization.

23666573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19723.

The product of its digits is 136080, while the sum is 38.

The square root of 23666573 is about 4864.8302128646. The cubic root of 23666573 is about 287.1078883916.

The spelling of 23666573 in words is "twenty-three million, six hundred sixty-six thousand, five hundred seventy-three".