22470649 has 2 divisors, whose sum is σ = 22470650. Its totient is φ = 22470648.

The previous prime is 22470647. The next prime is 22470659. The reversal of 22470649 is 94607422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18550249 + 3920400 = 4307^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 22470649 - 2¹ = 22470647 is a prime.

Together with 22470647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22470647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11235324 + 11235325.

It is an arithmetic number, because the mean of its divisors is an integer number (11235325).

Almost surely, 2^22470649 is an apocalyptic number.

It is an amenable number.

22470649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22470649 is an equidigital number, since it uses as much as digits as its factorization.

22470649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 22470649 is about 4740.3216135617. The cubic root of 22470649 is about 282.1879981428.

The spelling of 22470649 in words is "twenty-two million, four hundred seventy thousand, six hundred forty-nine".