6668713 has 2 divisors, whose sum is σ = 6668714. Its totient is φ = 6668712.

The previous prime is 6668707. The next prime is 6668719. The reversal of 6668713 is 3178666.

It is a balanced prime because it is at equal distance from previous prime (6668707) and next prime (6668719).

It can be written as a sum of positive squares in only one way, i.e., 5396329 + 1272384 = 2323^2 + 1128^2 .

It is a cyclic number.

It is not a de Polignac number, because 6668713 - 2²¹ = 4571561 is a prime.

It is not a weakly prime, because it can be changed into another prime (6668719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334356 + 3334357.

It is an arithmetic number, because the mean of its divisors is an integer number (3334357).

Almost surely, 2^6668713 is an apocalyptic number.

It is an amenable number.

6668713 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668713 is an equidigital number, since it uses as much as digits as its factorization.

6668713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 6668713 is about 2582.3851378135. The cubic root of 6668713 is about 188.2264605402.

It can be divided in two parts, 6668 and 713, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 6668713 in words is "six million, six hundred sixty-eight thousand, seven hundred thirteen".