13956637 has 2 divisors, whose sum is σ = 13956638. Its totient is φ = 13956636.

The previous prime is 13956629. The next prime is 13956661. The reversal of 13956637 is 73665931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 3786916 = 3189^2 + 1946^2 .

It is an emirp because it is prime and its reverse (73665931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13956637 - 2³ = 13956629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13956637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13956667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6978318 + 6978319.

It is an arithmetic number, because the mean of its divisors is an integer number (6978319).

Almost surely, 2^13956637 is an apocalyptic number.

It is an amenable number.

13956637 is a deficient number, since it is larger than the sum of its proper divisors (1).

13956637 is an equidigital number, since it uses as much as digits as its factorization.

13956637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 13956637 is about 3735.8582681895. The cubic root of 13956637 is about 240.7651333516.

The spelling of 13956637 in words is "thirteen million, nine hundred fifty-six thousand, six hundred thirty-seven".