23166993 has 4 divisors (see below), whose sum is σ = 30889328. Its totient is φ = 15444660.

The previous prime is 23166943. The next prime is 23167031. The reversal of 23166993 is 39966132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23166993 - 2¹⁰ = 23165969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23166943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3861163 + ... + 3861168.

It is an arithmetic number, because the mean of its divisors is an integer number (7722332).

Almost surely, 2^23166993 is an apocalyptic number.

It is an amenable number.

23166993 is a deficient number, since it is larger than the sum of its proper divisors (7722335).

23166993 is an equidigital number, since it uses as much as digits as its factorization.

23166993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7722334.

The product of its digits is 52488, while the sum is 39.

The square root of 23166993 is about 4813.2102592760. The cubic root of 23166993 is about 285.0733083195.

The spelling of 23166993 in words is "twenty-three million, one hundred sixty-six thousand, nine hundred ninety-three".