22863661 has 2 divisors, whose sum is σ = 22863662. Its totient is φ = 22863660.

The previous prime is 22863649. The next prime is 22863677. The reversal of 22863661 is 16636822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12744900 + 10118761 = 3570^2 + 3181^2 .

It is a cyclic number.

It is not a de Polignac number, because 22863661 - 2²³ = 14475053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22863601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11431830 + 11431831.

It is an arithmetic number, because the mean of its divisors is an integer number (11431831).

Almost surely, 2^22863661 is an apocalyptic number.

It is an amenable number.

22863661 is a deficient number, since it is larger than the sum of its proper divisors (1).

22863661 is an equidigital number, since it uses as much as digits as its factorization.

22863661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 22863661 is about 4781.5960724428. The cubic root of 22863661 is about 283.8236564786.

The spelling of 22863661 in words is "twenty-two million, eight hundred sixty-three thousand, six hundred sixty-one".