22666663 has 2 divisors, whose sum is σ = 22666664. Its totient is φ = 22666662.

The previous prime is 22666621. The next prime is 22666687. The reversal of 22666663 is 36666622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22666663 - 2²¹ = 20569511 is a prime.

It is a super-2 number, since 2×22666663² = 1027555223111138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22666463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11333331 + 11333332.

It is an arithmetic number, because the mean of its divisors is an integer number (11333332).

Almost surely, 2^22666663 is an apocalyptic number.

22666663 is a deficient number, since it is larger than the sum of its proper divisors (1).

22666663 is an equidigital number, since it uses as much as digits as its factorization.

22666663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The square root of 22666663 is about 4760.9519006182. The cubic root of 22666663 is about 283.0061430324.

The spelling of 22666663 in words is "twenty-two million, six hundred sixty-six thousand, six hundred sixty-three".