37620013 has 2 divisors, whose sum is σ = 37620014. Its totient is φ = 37620012.

The previous prime is 37620007. The next prime is 37620017. The reversal of 37620013 is 31002673.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32228329 + 5391684 = 5677^2 + 2322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37620013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37620017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18810006 + 18810007.

It is an arithmetic number, because the mean of its divisors is an integer number (18810007).

Almost surely, 2^37620013 is an apocalyptic number.

It is an amenable number.

37620013 is a deficient number, since it is larger than the sum of its proper divisors (1).

37620013 is an equidigital number, since it uses as much as digits as its factorization.

37620013 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 37620013 is about 6133.5155498295. The cubic root of 37620013 is about 335.0731643865.

Adding to 37620013 its reverse (31002673), we get a palindrome (68622686).

The spelling of 37620013 in words is "thirty-seven million, six hundred twenty thousand, thirteen".