13620037 has 2 divisors, whose sum is σ = 13620038. Its totient is φ = 13620036.

The previous prime is 13620023. The next prime is 13620041. The reversal of 13620037 is 73002631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11840481 + 1779556 = 3441^2 + 1334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13620037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13620007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810018 + 6810019.

It is an arithmetic number, because the mean of its divisors is an integer number (6810019).

Almost surely, 2^13620037 is an apocalyptic number.

It is an amenable number.

13620037 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620037 is an equidigital number, since it uses as much as digits as its factorization.

13620037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 13620037 is about 3690.5334302781. The cubic root of 13620037 is about 238.8138054843.

Adding to 13620037 its reverse (73002631), we get a palindrome (86622668).

The spelling of 13620037 in words is "thirteen million, six hundred twenty thousand, thirty-seven".