12620857 has 8 divisors (see below), whose sum is σ = 12930336. Its totient is φ = 12315072.

The previous prime is 12620843. The next prime is 12620891. The reversal of 12620857 is 75802621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12620857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12620827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6738 + ... + 8404.

It is an arithmetic number, because the mean of its divisors is an integer number (1616292).

Almost surely, 2^12620857 is an apocalyptic number.

It is an amenable number.

12620857 is a deficient number, since it is larger than the sum of its proper divisors (309479).

12620857 is a wasteful number, since it uses less digits than its factorization.

12620857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 12620857 is about 3552.5845521254. The cubic root of 12620857 is about 232.8250019892.

The spelling of 12620857 in words is "twelve million, six hundred twenty thousand, eight hundred fifty-seven".