22649689 has 2 divisors, whose sum is σ = 22649690. Its totient is φ = 22649688.

The previous prime is 22649663. The next prime is 22649701. The reversal of 22649689 is 98694622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 2534464 = 4485^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 22649689 - 2⁵ = 22649657 is a prime.

It is not a weakly prime, because it can be changed into another prime (22649489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11324844 + 11324845.

It is an arithmetic number, because the mean of its divisors is an integer number (11324845).

Almost surely, 2^22649689 is an apocalyptic number.

It is an amenable number.

22649689 is a deficient number, since it is larger than the sum of its proper divisors (1).

22649689 is an equidigital number, since it uses as much as digits as its factorization.

22649689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 46.

The square root of 22649689 is about 4759.1689400567. The cubic root of 22649689 is about 282.9354820523.

The spelling of 22649689 in words is "twenty-two million, six hundred forty-nine thousand, six hundred eighty-nine".