23090647 has 2 divisors, whose sum is σ = 23090648. Its totient is φ = 23090646.

The previous prime is 23090633. The next prime is 23090663. The reversal of 23090647 is 74609032.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23090647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23090047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11545323 + 11545324.

It is an arithmetic number, because the mean of its divisors is an integer number (11545324).

Almost surely, 2^23090647 is an apocalyptic number.

23090647 is a deficient number, since it is larger than the sum of its proper divisors (1).

23090647 is an equidigital number, since it uses as much as digits as its factorization.

23090647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 23090647 is about 4805.2728330450. The cubic root of 23090647 is about 284.7598140536.

Adding to 23090647 its reverse (74609032), we get a palindrome (97699679).

The spelling of 23090647 in words is "twenty-three million, ninety thousand, six hundred forty-seven".