12776965 has 8 divisors (see below), whose sum is σ = 15861240. Its totient is φ = 9868992.

The previous prime is 12776957. The next prime is 12776989. The reversal of 12776965 is 56967721.

It can be written as a sum of positive squares in 4 ways, for example, as 3932289 + 8844676 = 1983^2 + 2974^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12776965 - 2³ = 12776957 is a prime.

It is a super-2 number, since 2×12776965² = 326501669222450, which contains 22 as substring.

It is a congruent number.

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, 43914 + ... + 44203.

It is an arithmetic number, because the mean of its divisors is an integer number (1982655).

Almost surely, 2^12776965 is an apocalyptic number.

It is an amenable number.

12776965 is a deficient number, since it is larger than the sum of its proper divisors (3084275).

12776965 is an equidigital number, since it uses as much as digits as its factorization.

12776965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88151.

The product of its digits is 158760, while the sum is 43.

The square root of 12776965 is about 3574.4880752354. The cubic root of 12776965 is about 233.7810124047.

The spelling of 12776965 in words is "twelve million, seven hundred seventy-six thousand, nine hundred sixty-five".