6781133 has 2 divisors, whose sum is σ = 6781134. Its totient is φ = 6781132.

The previous prime is 6781129. The next prime is 6781141. The reversal of 6781133 is 3311876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3694084 + 3087049 = 1922^2 + 1757^2 .

It is a cyclic number.

It is not a de Polignac number, because 6781133 - 2² = 6781129 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 6781096 and 6781105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6781153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390566 + 3390567.

It is an arithmetic number, because the mean of its divisors is an integer number (3390567).

Almost surely, 2^6781133 is an apocalyptic number.

It is an amenable number.

6781133 is a deficient number, since it is larger than the sum of its proper divisors (1).

6781133 is an equidigital number, since it uses as much as digits as its factorization.

6781133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 6781133 is about 2604.0608671842. The cubic root of 6781133 is about 189.2782683741.

The spelling of 6781133 in words is "six million, seven hundred eighty-one thousand, one hundred thirty-three".