22638593 has 2 divisors, whose sum is σ = 22638594. Its totient is φ = 22638592.

The previous prime is 22638571. The next prime is 22638617. The reversal of 22638593 is 39583622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17833729 + 4804864 = 4223^2 + 2192^2 .

It is a cyclic number.

It is not a de Polignac number, because 22638593 - 2¹⁴ = 22622209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22638523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11319296 + 11319297.

It is an arithmetic number, because the mean of its divisors is an integer number (11319297).

Almost surely, 2^22638593 is an apocalyptic number.

It is an amenable number.

22638593 is a deficient number, since it is larger than the sum of its proper divisors (1).

22638593 is an equidigital number, since it uses as much as digits as its factorization.

22638593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 22638593 is about 4758.0030474980. The cubic root of 22638593 is about 282.8892714852.

The spelling of 22638593 in words is "twenty-two million, six hundred thirty-eight thousand, five hundred ninety-three".