12863657 has 2 divisors, whose sum is σ = 12863658. Its totient is φ = 12863656.

The previous prime is 12863633. The next prime is 12863671. The reversal of 12863657 is 75636821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 2725801 = 3184^2 + 1651^2 .

It is a cyclic number.

It is not a de Polignac number, because 12863657 - 2¹⁴ = 12847273 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12863657.

It is not a weakly prime, because it can be changed into another prime (12863687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6431828 + 6431829.

It is an arithmetic number, because the mean of its divisors is an integer number (6431829).

Almost surely, 2^12863657 is an apocalyptic number.

It is an amenable number.

12863657 is a deficient number, since it is larger than the sum of its proper divisors (1).

12863657 is an equidigital number, since it uses as much as digits as its factorization.

12863657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 12863657 is about 3586.5940667993. The cubic root of 12863657 is about 234.3085575691.

The spelling of 12863657 in words is "twelve million, eight hundred sixty-three thousand, six hundred fifty-seven".