23066621 has 4 divisors (see below), whose sum is σ = 23150172. Its totient is φ = 22983072.

The previous prime is 23066591. The next prime is 23066623. The reversal of 23066621 is 12666032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 15288100 = 2789^2 + 3910^2 .

It is a cyclic number.

It is not a de Polignac number, because 23066621 - 2⁶ = 23066557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23066623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41360 + ... + 41913.

It is an arithmetic number, because the mean of its divisors is an integer number (5787543).

Almost surely, 2^23066621 is an apocalyptic number.

It is an amenable number.

23066621 is a deficient number, since it is larger than the sum of its proper divisors (83551).

23066621 is an equidigital number, since it uses as much as digits as its factorization.

23066621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83550.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 23066621 is about 4802.7722202911. The cubic root of 23066621 is about 284.6610148357.

The spelling of 23066621 in words is "twenty-three million, sixty-six thousand, six hundred twenty-one".