23340649 has 2 divisors, whose sum is σ = 23340650. Its totient is φ = 23340648.

The previous prime is 23340637. The next prime is 23340689. The reversal of 23340649 is 94604332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20313049 + 3027600 = 4507^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 23340649 - 2⁹ = 23340137 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23340649.

It is not a weakly prime, because it can be changed into another prime (23340689) 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, 11670324 + 11670325.

It is an arithmetic number, because the mean of its divisors is an integer number (11670325).

Almost surely, 2^23340649 is an apocalyptic number.

It is an amenable number.

23340649 is a deficient number, since it is larger than the sum of its proper divisors (1).

23340649 is an equidigital number, since it uses as much as digits as its factorization.

23340649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 23340649 is about 4831.2160994930. The cubic root of 23340649 is about 285.7838236338.

The spelling of 23340649 in words is "twenty-three million, three hundred forty thousand, six hundred forty-nine".