13422637 has 2 divisors, whose sum is σ = 13422638. Its totient is φ = 13422636.

The previous prime is 13422631. The next prime is 13422641. The reversal of 13422637 is 73622431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 599076 = 3581^2 + 774^2 .

It is an emirp because it is prime and its reverse (73622431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13422637 - 2⁷ = 13422509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13422631) 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, 6711318 + 6711319.

It is an arithmetic number, because the mean of its divisors is an integer number (6711319).

Almost surely, 2^13422637 is an apocalyptic number.

It is an amenable number.

13422637 is a deficient number, since it is larger than the sum of its proper divisors (1).

13422637 is an equidigital number, since it uses as much as digits as its factorization.

13422637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 13422637 is about 3663.6917173802. The cubic root of 13422637 is about 237.6544487537.

The spelling of 13422637 in words is "thirteen million, four hundred twenty-two thousand, six hundred thirty-seven".