12775881 has 8 divisors (see below), whose sum is σ = 17051104. Its totient is φ = 8508960.

The previous prime is 12775871. The next prime is 12775913. The reversal of 12775881 is 18857721.

12775881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12775881 - 2⁵ = 12775849 is a prime.

It is a super-2 number, since 2×12775881² = 326446270652322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12775831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4461 + ... + 6741.

It is an arithmetic number, because the mean of its divisors is an integer number (2131388).

Almost surely, 2^12775881 is an apocalyptic number.

It is an amenable number.

12775881 is a deficient number, since it is larger than the sum of its proper divisors (4275223).

12775881 is a wasteful number, since it uses less digits than its factorization.

12775881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151.

The product of its digits is 31360, while the sum is 39.

The square root of 12775881 is about 3574.3364419148. The cubic root of 12775881 is about 233.7744008767.

The spelling of 12775881 in words is "twelve million, seven hundred seventy-five thousand, eight hundred eighty-one".