12877657 has 4 divisors (see below), whose sum is σ = 13868260. Its totient is φ = 11887056.

The previous prime is 12877637. The next prime is 12877661. The reversal of 12877657 is 75677821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75677821 = 1931 ⋅39191.

It can be written as a sum of positive squares in 2 ways, for example, as 968256 + 11909401 = 984^2 + 3451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12877657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12877637) 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, 495282 + ... + 495307.

It is an arithmetic number, because the mean of its divisors is an integer number (3467065).

Almost surely, 2^12877657 is an apocalyptic number.

It is an amenable number.

12877657 is a deficient number, since it is larger than the sum of its proper divisors (990603).

12877657 is an equidigital number, since it uses as much as digits as its factorization.

12877657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990602.

The product of its digits is 164640, while the sum is 43.

The square root of 12877657 is about 3588.5452484259. The cubic root of 12877657 is about 234.3935290121.

The spelling of 12877657 in words is "twelve million, eight hundred seventy-seven thousand, six hundred fifty-seven".