22456649 has 2 divisors, whose sum is σ = 22456650. Its totient is φ = 22456648.

The previous prime is 22456633. The next prime is 22456691. The reversal of 22456649 is 94665422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15460624 + 6996025 = 3932^2 + 2645^2 .

It is a cyclic number.

It is not a de Polignac number, because 22456649 - 2⁴ = 22456633 is a prime.

It is not a weakly prime, because it can be changed into another prime (22456249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11228324 + 11228325.

It is an arithmetic number, because the mean of its divisors is an integer number (11228325).

Almost surely, 2^22456649 is an apocalyptic number.

It is an amenable number.

22456649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22456649 is an equidigital number, since it uses as much as digits as its factorization.

22456649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 22456649 is about 4738.8446904282. The cubic root of 22456649 is about 282.1293816379.

The spelling of 22456649 in words is "twenty-two million, four hundred fifty-six thousand, six hundred forty-nine".