12774656 has 36 divisors (see below), whose sum is σ = 25754400. Its totient is φ = 6323712.

The previous prime is 12774649. The next prime is 12774661. The reversal of 12774656 is 65647721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35405 + ... + 35763.

It is an arithmetic number, because the mean of its divisors is an integer number (715400).

Almost surely, 2^12774656 is an apocalyptic number.

12774656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12774656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12877200).

12774656 is an abundant number, since it is smaller than the sum of its proper divisors (12979744).

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

12774656 is an equidigital number, since it uses as much as digits as its factorization.

12774656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 500 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 12774656 is about 3574.1650773292. The cubic root of 12774656 is about 233.7669289120.

The spelling of 12774656 in words is "twelve million, seven hundred seventy-four thousand, six hundred fifty-six".