12857965 has 8 divisors (see below), whose sum is σ = 16241760. Its totient is φ = 9744912.

The previous prime is 12857953. The next prime is 12857983. The reversal of 12857965 is 56975821.

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

It is a cyclic number.

It is not a de Polignac number, because 12857965 - 2²³ = 4469357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67579 + ... + 67768.

It is an arithmetic number, because the mean of its divisors is an integer number (2030220).

Almost surely, 2^12857965 is an apocalyptic number.

It is an amenable number.

12857965 is a deficient number, since it is larger than the sum of its proper divisors (3383795).

12857965 is a wasteful number, since it uses less digits than its factorization.

12857965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135371.

The product of its digits is 151200, while the sum is 43.

The square root of 12857965 is about 3585.8004685147. The cubic root of 12857965 is about 234.2739929796.

The spelling of 12857965 in words is "twelve million, eight hundred fifty-seven thousand, nine hundred sixty-five".