12635653 has 2 divisors, whose sum is σ = 12635654. Its totient is φ = 12635652.

The previous prime is 12635639. The next prime is 12635669. The reversal of 12635653 is 35653621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9597604 + 3038049 = 3098^2 + 1743^2 .

It is a cyclic number.

It is not a de Polignac number, because 12635653 - 2¹⁷ = 12504581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12635603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6317826 + 6317827.

It is an arithmetic number, because the mean of its divisors is an integer number (6317827).

Almost surely, 2^12635653 is an apocalyptic number.

It is an amenable number.

12635653 is a deficient number, since it is larger than the sum of its proper divisors (1).

12635653 is an equidigital number, since it uses as much as digits as its factorization.

12635653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 31.

The square root of 12635653 is about 3554.6663697174. Note that the first 3 decimals coincide. The cubic root of 12635653 is about 232.9159502085.

The spelling of 12635653 in words is "twelve million, six hundred thirty-five thousand, six hundred fifty-three".