12857663 has 16 divisors (see below), whose sum is σ = 15919680. Its totient is φ = 10112256.

The previous prime is 12857659. The next prime is 12857711. The reversal of 12857663 is 36675821.

12857663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12857663 - 2² = 12857659 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12854663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20531 + ... + 21147.

It is an arithmetic number, because the mean of its divisors is an integer number (994980).

Almost surely, 2^12857663 is an apocalyptic number.

12857663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12857663 is a deficient number, since it is larger than the sum of its proper divisors (3062017).

12857663 is a wasteful number, since it uses less digits than its factorization.

12857663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866.

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

The square root of 12857663 is about 3585.7583577257. The cubic root of 12857663 is about 234.2721588040.

The spelling of 12857663 in words is "twelve million, eight hundred fifty-seven thousand, six hundred sixty-three".