12857377 has 4 divisors (see below), whose sum is σ = 13846420. Its totient is φ = 11868336.

The previous prime is 12857347. The next prime is 12857381. The reversal of 12857377 is 77375821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77375821 = 67 ⋅1154863.

It can be written as a sum of positive squares in 2 ways, for example, as 1628176 + 11229201 = 1276^2 + 3351^2 .

It is a cyclic number.

It is not a de Polignac number, because 12857377 - 2¹¹ = 12855329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12857347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494502 + ... + 494527.

It is an arithmetic number, because the mean of its divisors is an integer number (3461605).

Almost surely, 2^12857377 is an apocalyptic number.

It is an amenable number.

12857377 is a deficient number, since it is larger than the sum of its proper divisors (989043).

12857377 is an equidigital number, since it uses as much as digits as its factorization.

12857377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989042.

The product of its digits is 82320, while the sum is 40.

The square root of 12857377 is about 3585.7184775160. The cubic root of 12857377 is about 234.2704217767.

The spelling of 12857377 in words is "twelve million, eight hundred fifty-seven thousand, three hundred seventy-seven".