23087609 has 2 divisors, whose sum is σ = 23087610. Its totient is φ = 23087608.

The previous prime is 23087587. The next prime is 23087611. The reversal of 23087609 is 90678032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20976400 + 2111209 = 4580^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 23087609 - 2⁸ = 23087353 is a prime.

Together with 23087611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23087629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11543804 + 11543805.

It is an arithmetic number, because the mean of its divisors is an integer number (11543805).

Almost surely, 2^23087609 is an apocalyptic number.

It is an amenable number.

23087609 is a deficient number, since it is larger than the sum of its proper divisors (1).

23087609 is an equidigital number, since it uses as much as digits as its factorization.

23087609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 23087609 is about 4804.9567115636. The cubic root of 23087609 is about 284.7473250394.

The spelling of 23087609 in words is "twenty-three million, eighty-seven thousand, six hundred nine".