12877881 has 4 divisors (see below), whose sum is σ = 17170512. Its totient is φ = 8585252.

The previous prime is 12877847. The next prime is 12877883. The reversal of 12877881 is 18877821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18877821 = 3 ⋅6292607.

It is a cyclic number.

It is not a de Polignac number, because 12877881 - 2¹⁵ = 12845113 is a prime.

It is a super-2 number, since 2×12877881² = 331679638100322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12877883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146311 + ... + 2146316.

It is an arithmetic number, because the mean of its divisors is an integer number (4292628).

Almost surely, 2^12877881 is an apocalyptic number.

It is an amenable number.

12877881 is a deficient number, since it is larger than the sum of its proper divisors (4292631).

12877881 is an equidigital number, since it uses as much as digits as its factorization.

12877881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292630.

The product of its digits is 50176, while the sum is 42.

The square root of 12877881 is about 3588.5764587089. The cubic root of 12877881 is about 234.3948880546.

The spelling of 12877881 in words is "twelve million, eight hundred seventy-seven thousand, eight hundred eighty-one".