6771139 has 2 divisors, whose sum is σ = 6771140. Its totient is φ = 6771138.

The previous prime is 6771137. The next prime is 6771143. The reversal of 6771139 is 9311776.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6771139 - 2¹ = 6771137 is a prime.

Together with 6771137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6771137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3385569 + 3385570.

It is an arithmetic number, because the mean of its divisors is an integer number (3385570).

Almost surely, 2^6771139 is an apocalyptic number.

6771139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6771139 is an equidigital number, since it uses as much as digits as its factorization.

6771139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 34.

The square root of 6771139 is about 2602.1412336766. The cubic root of 6771139 is about 189.1852368667.

The spelling of 6771139 in words is "six million, seven hundred seventy-one thousand, one hundred thirty-nine".