2768881 has 4 divisors (see below), whose sum is σ = 2786032. Its totient is φ = 2751732.

The previous prime is 2768873. The next prime is 2768893. The reversal of 2768881 is 1888672.

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.

It is a cyclic number.

It is not a de Polignac number, because 2768881 - 2³ = 2768873 is a prime.

It is a super-2 number, since 2×2768881² = 15333403984322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2768681) 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, 8331 + ... + 8656.

It is an arithmetic number, because the mean of its divisors is an integer number (696508).

2^2768881 is an apocalyptic number.

It is an amenable number.

2768881 is a deficient number, since it is larger than the sum of its proper divisors (17151).

2768881 is a wasteful number, since it uses less digits than its factorization.

2768881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17150.

The product of its digits is 43008, while the sum is 40.

The square root of 2768881 is about 1663.9954927824. The cubic root of 2768881 is about 140.4218737142.

The spelling of 2768881 in words is "two million, seven hundred sixty-eight thousand, eight hundred eighty-one".