12770881 has 2 divisors, whose sum is σ = 12770882. Its totient is φ = 12770880.

The previous prime is 12770861. The next prime is 12770897. The reversal of 12770881 is 18807721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 1648656 = 3335^2 + 1284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12770881 is a prime.

It is a super-2 number, since 2×12770881² = 326190803032322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12770801) 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 as a sum of consecutive naturals, namely, 6385440 + 6385441.

It is an arithmetic number, because the mean of its divisors is an integer number (6385441).

Almost surely, 2^12770881 is an apocalyptic number.

It is an amenable number.

12770881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12770881 is an equidigital number, since it uses as much as digits as its factorization.

12770881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 12770881 is about 3573.6369429476. The cubic root of 12770881 is about 233.7439000572.

The spelling of 12770881 in words is "twelve million, seven hundred seventy thousand, eight hundred eighty-one".