12745777 has 6 divisors (see below), whose sum is σ = 14009954. Its totient is φ = 11586960.

The previous prime is 12745753. The next prime is 12745787. The reversal of 12745777 is 77754721.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 43681 = 3564^2 + 209^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12745777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12745717) 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 5 ways as a sum of consecutive naturals, for example, 52548 + ... + 52789.

Almost surely, 2^12745777 is an apocalyptic number.

It is an amenable number.

12745777 is a deficient number, since it is larger than the sum of its proper divisors (1264177).

12745777 is a wasteful number, since it uses less digits than its factorization.

12745777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105359 (or 105348 counting only the distinct ones).

The product of its digits is 96040, while the sum is 40.

The square root of 12745777 is about 3570.1228270187. The cubic root of 12745777 is about 233.5906410935.

It can be divided in two parts, 127457 and 77, that multiplied together give a palindrome (9814189).

The spelling of 12745777 in words is "twelve million, seven hundred forty-five thousand, seven hundred seventy-seven".