22663961 has 4 divisors (see below), whose sum is σ = 22690512. Its totient is φ = 22637412.

The previous prime is 22663957. The next prime is 22663969. The reversal of 22663961 is 16936622.

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 a cyclic number.

It is not a de Polignac number, because 22663961 - 2² = 22663957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22663969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11951 + ... + 13716.

It is an arithmetic number, because the mean of its divisors is an integer number (5672628).

Almost surely, 2^22663961 is an apocalyptic number.

It is an amenable number.

22663961 is a deficient number, since it is larger than the sum of its proper divisors (26551).

22663961 is an equidigital number, since it uses as much as digits as its factorization.

22663961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26550.

The product of its digits is 23328, while the sum is 35.

The square root of 22663961 is about 4760.6681253790. The cubic root of 22663961 is about 282.9948972514.

The spelling of 22663961 in words is "twenty-two million, six hundred sixty-three thousand, nine hundred sixty-one".