12722641 has 2 divisors, whose sum is σ = 12722642. Its totient is φ = 12722640.

The previous prime is 12722627. The next prime is 12722653. The reversal of 12722641 is 14622721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11730625 + 992016 = 3425^2 + 996^2 .

It is a cyclic number.

It is not a de Polignac number, because 12722641 - 2¹¹ = 12720593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12722041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361320 + 6361321.

It is an arithmetic number, because the mean of its divisors is an integer number (6361321).

Almost surely, 2^12722641 is an apocalyptic number.

It is an amenable number.

12722641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12722641 is an equidigital number, since it uses as much as digits as its factorization.

12722641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 12722641 is about 3566.8811306238. The cubic root of 12722641 is about 233.4492183998.

The spelling of 12722641 in words is "twelve million, seven hundred twenty-two thousand, six hundred forty-one".