22467649 has 2 divisors, whose sum is σ = 22467650. Its totient is φ = 22467648.

The previous prime is 22467647. The next prime is 22467689. The reversal of 22467649 is 94676422.

It is an a-pointer prime, because the next prime (22467689) can be obtained adding 22467649 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 49 = 4740^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 22467649 - 2¹ = 22467647 is a prime.

Together with 22467647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22467647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11233824 + 11233825.

It is an arithmetic number, because the mean of its divisors is an integer number (11233825).

Almost surely, 2^22467649 is an apocalyptic number.

It is an amenable number.

22467649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22467649 is an equidigital number, since it uses as much as digits as its factorization.

22467649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 40.

The square root of 22467649 is about 4740.0051687736. The cubic root of 22467649 is about 282.1754395132.

It can be divided in two parts, 224676 and 49, that multiplied together give a square (11009124 = 3318²).

The spelling of 22467649 in words is "twenty-two million, four hundred sixty-seven thousand, six hundred forty-nine".