22705493 has 2 divisors, whose sum is σ = 22705494. Its totient is φ = 22705492.

The previous prime is 22705477. The next prime is 22705517. The reversal of 22705493 is 39450722.

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., 18992164 + 3713329 = 4358^2 + 1927^2 .

It is a cyclic number.

It is not a de Polignac number, because 22705493 - 2⁴ = 22705477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22705433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11352746 + 11352747.

It is an arithmetic number, because the mean of its divisors is an integer number (11352747).

Almost surely, 2^22705493 is an apocalyptic number.

It is an amenable number.

22705493 is a deficient number, since it is larger than the sum of its proper divisors (1).

22705493 is an equidigital number, since it uses as much as digits as its factorization.

22705493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 22705493 is about 4765.0281216379. The cubic root of 22705493 is about 283.1676556965.

The spelling of 22705493 in words is "twenty-two million, seven hundred five thousand, four hundred ninety-three".