22643087 has 2 divisors, whose sum is σ = 22643088. Its totient is φ = 22643086.

The previous prime is 22643081. The next prime is 22643129. The reversal of 22643087 is 78034622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22643087 - 2⁸ = 22642831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22643081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321543 + 11321544.

It is an arithmetic number, because the mean of its divisors is an integer number (11321544).

Almost surely, 2^22643087 is an apocalyptic number.

22643087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22643087 is an equidigital number, since it uses as much as digits as its factorization.

22643087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 22643087 is about 4758.4752810118. The cubic root of 22643087 is about 282.9079890836.

The spelling of 22643087 in words is "twenty-two million, six hundred forty-three thousand, eighty-seven".