23740657 has 2 divisors, whose sum is σ = 23740658. Its totient is φ = 23740656.

The previous prime is 23740649. The next prime is 23740663. The reversal of 23740657 is 75604732.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12988816 + 10751841 = 3604^2 + 3279^2 .

It is a cyclic number.

It is not a de Polignac number, because 23740657 - 2³ = 23740649 is a prime.

It is not a weakly prime, because it can be changed into another prime (23740697) 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, 11870328 + 11870329.

It is an arithmetic number, because the mean of its divisors is an integer number (11870329).

Almost surely, 2^23740657 is an apocalyptic number.

It is an amenable number.

23740657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23740657 is an equidigital number, since it uses as much as digits as its factorization.

23740657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 23740657 is about 4872.4385065386. The cubic root of 23740657 is about 287.4071564103.

The spelling of 23740657 in words is "twenty-three million, seven hundred forty thousand, six hundred fifty-seven".