6761891 has 6 divisors (see below), whose sum is σ = 7136892. Its totient is φ = 6405660.

The previous prime is 6761873. The next prime is 6761897. The reversal of 6761891 is 1981676.

It is not a de Polignac number, because 6761891 - 2¹⁰ = 6760867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6761897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9005 + ... + 9726.

It is an arithmetic number, because the mean of its divisors is an integer number (1189482).

Almost surely, 2^6761891 is an apocalyptic number.

6761891 is a deficient number, since it is larger than the sum of its proper divisors (375001).

6761891 is a wasteful number, since it uses less digits than its factorization.

6761891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18769 (or 18750 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 6761891 is about 2600.3636284181. The cubic root of 6761891 is about 189.0990680945.

The spelling of 6761891 in words is "six million, seven hundred sixty-one thousand, eight hundred ninety-one".