7881841 has 4 divisors (see below), whose sum is σ = 8598384. Its totient is φ = 7165300.

The previous prime is 7881817. The next prime is 7881859. The reversal of 7881841 is 1481887.

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 7881841 - 2⁹ = 7881329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7881841.

It is not an unprimeable number, because it can be changed into a prime (7881241) 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, 358255 + ... + 358276.

It is an arithmetic number, because the mean of its divisors is an integer number (2149596).

Almost surely, 2^7881841 is an apocalyptic number.

It is an amenable number.

7881841 is a deficient number, since it is larger than the sum of its proper divisors (716543).

7881841 is a wasteful number, since it uses less digits than its factorization.

7881841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716542.

The product of its digits is 14336, while the sum is 37.

The square root of 7881841 is about 2807.4616649208. The cubic root of 7881841 is about 199.0104537323.

The spelling of 7881841 in words is "seven million, eight hundred eighty-one thousand, eight hundred forty-one".