12777716 has 24 divisors (see below), whose sum is σ = 25749696. Its totient is φ = 5434560.

The previous prime is 12777703. The next prime is 12777763. The reversal of 12777716 is 61777721.

It is a self number, because there is not a number n which added to its sum of digits gives 12777716.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2171 + ... + 5501.

It is an arithmetic number, because the mean of its divisors is an integer number (1072904).

Almost surely, 2^12777716 is an apocalyptic number.

It is an amenable number.

12777716 is an abundant number, since it is smaller than the sum of its proper divisors (12971980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12777716 is a wasteful number, since it uses less digits than its factorization.

12777716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479 (or 3477 counting only the distinct ones).

The product of its digits is 28812, while the sum is 38.

The square root of 12777716 is about 3574.5931236995. The cubic root of 12777716 is about 233.7855926813.

The spelling of 12777716 in words is "twelve million, seven hundred seventy-seven thousand, seven hundred sixteen".