23420687 has 2 divisors, whose sum is σ = 23420688. Its totient is φ = 23420686.

The previous prime is 23420671. The next prime is 23420689. The reversal of 23420687 is 78602432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23420687 - 2⁴ = 23420671 is a prime.

Together with 23420689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23420689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710343 + 11710344.

It is an arithmetic number, because the mean of its divisors is an integer number (11710344).

Almost surely, 2^23420687 is an apocalyptic number.

23420687 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420687 is an equidigital number, since it uses as much as digits as its factorization.

23420687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 23420687 is about 4839.4924320635. The cubic root of 23420687 is about 286.1101137602.

The spelling of 23420687 in words is "twenty-three million, four hundred twenty thousand, six hundred eighty-seven".