22897649 has 2 divisors, whose sum is σ = 22897650. Its totient is φ = 22897648.

The previous prime is 22897607. The next prime is 22897661. The reversal of 22897649 is 94679822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21687649 + 1210000 = 4657^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 22897649 - 2¹² = 22893553 is a prime.

It is not a weakly prime, because it can be changed into another prime (22897669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11448824 + 11448825.

It is an arithmetic number, because the mean of its divisors is an integer number (11448825).

Almost surely, 2^22897649 is an apocalyptic number.

It is an amenable number.

22897649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22897649 is an equidigital number, since it uses as much as digits as its factorization.

22897649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 22897649 is about 4785.1487960146. The cubic root of 22897649 is about 283.9642263014.

The spelling of 22897649 in words is "twenty-two million, eight hundred ninety-seven thousand, six hundred forty-nine".