12777636 has 24 divisors (see below), whose sum is σ = 29917440. Its totient is φ = 4244512.

The previous prime is 12777629. The next prime is 12777643. The reversal of 12777636 is 63677721.

It is an interprime number because it is at equal distance from previous prime (12777629) and next prime (12777643).

It is a junction number, because it is equal to n+sod(n) for n = 12777594 and 12777603.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2125 + ... + 5483.

It is an arithmetic number, because the mean of its divisors is an integer number (1246560).

Almost surely, 2^12777636 is an apocalyptic number.

It is an amenable number.

12777636 is an abundant number, since it is smaller than the sum of its proper divisors (17139804).

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

12777636 is a wasteful number, since it uses less digits than its factorization.

12777636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683 (or 3681 counting only the distinct ones).

The product of its digits is 74088, while the sum is 39.

The square root of 12777636 is about 3574.5819335973. The cubic root of 12777636 is about 233.7851047775.

The spelling of 12777636 in words is "twelve million, seven hundred seventy-seven thousand, six hundred thirty-six".