12620437 has 2 divisors, whose sum is σ = 12620438. Its totient is φ = 12620436.

The previous prime is 12620417. The next prime is 12620479. The reversal of 12620437 is 73402621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10699441 + 1920996 = 3271^2 + 1386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12620437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12620407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6310218 + 6310219.

It is an arithmetic number, because the mean of its divisors is an integer number (6310219).

Almost surely, 2^12620437 is an apocalyptic number.

It is an amenable number.

12620437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12620437 is an equidigital number, since it uses as much as digits as its factorization.

12620437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 12620437 is about 3552.5254397400. The cubic root of 12620437 is about 232.8224192912.

The spelling of 12620437 in words is "twelve million, six hundred twenty thousand, four hundred thirty-seven".