12857633 has 4 divisors (see below), whose sum is σ = 12864900. Its totient is φ = 12850368.

The previous prime is 12857629. The next prime is 12857651. The reversal of 12857633 is 33675821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6390784 + 6466849 = 2528^2 + 2543^2 .

It is a cyclic number.

It is not a de Polignac number, because 12857633 - 2² = 12857629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12857593 and 12857602.

It is not an unprimeable number, because it can be changed into a prime (12857333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941 + ... + 5157.

It is an arithmetic number, because the mean of its divisors is an integer number (3216225).

Almost surely, 2^12857633 is an apocalyptic number.

It is an amenable number.

12857633 is a deficient number, since it is larger than the sum of its proper divisors (7267).

12857633 is an equidigital number, since it uses as much as digits as its factorization.

12857633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266.

The product of its digits is 30240, while the sum is 35.

The square root of 12857633 is about 3585.7541745078. The cubic root of 12857633 is about 234.2719765995.

The spelling of 12857633 in words is "twelve million, eight hundred fifty-seven thousand, six hundred thirty-three".