2647881 has 12 divisors (see below), whose sum is σ = 3843840. Its totient is φ = 1756440.

The previous prime is 2647873. The next prime is 2647889. The reversal of 2647881 is 1887462.

2647881 is a `hidden beast` number, since 2 + 647 + 8 + 8 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (2647873) and next prime (2647889).

It is not a de Polignac number, because 2647881 - 2³ = 2647873 is a prime.

It is a super-2 number, since 2×2647881² = 14022547580322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2647889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1536 + ... + 2766.

It is an arithmetic number, because the mean of its divisors is an integer number (320320).

2^2647881 is an apocalyptic number.

It is an amenable number.

2647881 is a deficient number, since it is larger than the sum of its proper divisors (1195959).

2647881 is a wasteful number, since it uses less digits than its factorization.

2647881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1473 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 2647881 is about 1627.2310837739. The cubic root of 2647881 is about 138.3458558687.

The spelling of 2647881 in words is "two million, six hundred forty-seven thousand, eight hundred eighty-one".