12629557 has 2 divisors, whose sum is σ = 12629558. Its totient is φ = 12629556.

The previous prime is 12629537. The next prime is 12629563. The reversal of 12629557 is 75592621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 1962801 = 3266^2 + 1401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12629557 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 (12629527) 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, 6314778 + 6314779.

It is an arithmetic number, because the mean of its divisors is an integer number (6314779).

Almost surely, 2^12629557 is an apocalyptic number.

It is an amenable number.

12629557 is a deficient number, since it is larger than the sum of its proper divisors (1).

12629557 is an equidigital number, since it uses as much as digits as its factorization.

12629557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 12629557 is about 3553.8088018350. The cubic root of 12629557 is about 232.8784878515.

The spelling of 12629557 in words is "twelve million, six hundred twenty-nine thousand, five hundred fifty-seven".