12633857 has 4 divisors (see below), whose sum is σ = 12644016. Its totient is φ = 12623700.

The previous prime is 12633853. The next prime is 12633869. The reversal of 12633857 is 75833621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 12633857 - 2² = 12633853 is a prime.

It is a super-2 number, since 2×12633857² = 319228685392898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12633853) 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, 2903 + ... + 5804.

It is an arithmetic number, because the mean of its divisors is an integer number (3161004).

Almost surely, 2^12633857 is an apocalyptic number.

It is an amenable number.

12633857 is a deficient number, since it is larger than the sum of its proper divisors (10159).

12633857 is an equidigital number, since it uses as much as digits as its factorization.

12633857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10158.

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

The square root of 12633857 is about 3554.4137350624. The cubic root of 12633857 is about 232.9049143227.

The spelling of 12633857 in words is "twelve million, six hundred thirty-three thousand, eight hundred fifty-seven".