6711394021 has 2 divisors, whose sum is σ = 6711394022. Its totient is φ = 6711394020.

The previous prime is 6711394007. The next prime is 6711394051. The reversal of 6711394021 is 1204931176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5313681025 + 1397712996 = 72895^2 + 37386^2 .

It is a cyclic number.

It is not a de Polignac number, because 6711394021 - 2⁵ = 6711393989 is a prime.

It is a super-2 number, since 2×6711394021² = 90085619410229096882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6711394051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3355697010 + 3355697011.

It is an arithmetic number, because the mean of its divisors is an integer number (3355697011).

Almost surely, 2^6711394021 is an apocalyptic number.

It is an amenable number.

6711394021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6711394021 is an equidigital number, since it uses as much as digits as its factorization.

6711394021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 6711394021 is about 81923.0982141179. The cubic root of 6711394021 is about 1886.2716849974.

The spelling of 6711394021 in words is "six billion, seven hundred eleven million, three hundred ninety-four thousand, twenty-one".