6731091 has 12 divisors (see below), whose sum is σ = 9949368. Its totient is φ = 4382784.

The previous prime is 6731083. The next prime is 6731107. The reversal of 6731091 is 1901376.

It is not a de Polignac number, because 6731091 - 2³ = 6731083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6731041) 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 11 ways as a sum of consecutive naturals, for example, 8310 + ... + 9083.

It is an arithmetic number, because the mean of its divisors is an integer number (829114).

Almost surely, 2^6731091 is an apocalyptic number.

6731091 is a deficient number, since it is larger than the sum of its proper divisors (3218277).

6731091 is a wasteful number, since it uses less digits than its factorization.

6731091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17442 (or 17439 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 6731091 is about 2594.4346204906. The cubic root of 6731091 is about 188.8115194991.

It can be divided in two parts, 673 and 1091, that added together give a square (1764 = 42²).

The spelling of 6731091 in words is "six million, seven hundred thirty-one thousand, ninety-one".