23626649 has 2 divisors, whose sum is σ = 23626650. Its totient is φ = 23626648.

The previous prime is 23626637. The next prime is 23626667. The reversal of 23626649 is 94662632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21576025 + 2050624 = 4645^2 + 1432^2 .

It is a cyclic number.

It is not a de Polignac number, because 23626649 - 2¹² = 23622553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23626249) 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, 11813324 + 11813325.

It is an arithmetic number, because the mean of its divisors is an integer number (11813325).

Almost surely, 2^23626649 is an apocalyptic number.

It is an amenable number.

23626649 is a deficient number, since it is larger than the sum of its proper divisors (1).

23626649 is an equidigital number, since it uses as much as digits as its factorization.

23626649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 38.

The square root of 23626649 is about 4860.7251516620. The cubic root of 23626649 is about 286.9463532892.

The spelling of 23626649 in words is "twenty-three million, six hundred twenty-six thousand, six hundred forty-nine".