12977757 has 12 divisors (see below), whose sum is σ = 20187804. Its totient is φ = 7986240.

The previous prime is 12977753. The next prime is 12977759. The reversal of 12977757 is 75777921.

It can be written as a sum of positive squares in 2 ways, for example, as 509796 + 12467961 = 714^2 + 3531^2 .

It is not a de Polignac number, because 12977757 - 2² = 12977753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977753) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 55344 + ... + 55577.

It is an arithmetic number, because the mean of its divisors is an integer number (1682317).

Almost surely, 2^12977757 is an apocalyptic number.

It is an amenable number.

12977757 is a deficient number, since it is larger than the sum of its proper divisors (7210047).

12977757 is a wasteful number, since it uses less digits than its factorization.

12977757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110940 (or 110937 counting only the distinct ones).

The product of its digits is 216090, while the sum is 45.

The square root of 12977757 is about 3602.4654058020. The cubic root of 12977757 is about 234.9992877600. Note that the first 3 decimals are identical.

The spelling of 12977757 in words is "twelve million, nine hundred seventy-seven thousand, seven hundred fifty-seven".