6749279 has 2 divisors, whose sum is σ = 6749280. Its totient is φ = 6749278.

The previous prime is 6749263. The next prime is 6749291. The reversal of 6749279 is 9729476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6749279 - 2⁴ = 6749263 is a prime.

It is a super-3 number, since 3×6749279³ (a number of 21 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6749209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3374639 + 3374640.

It is an arithmetic number, because the mean of its divisors is an integer number (3374640).

Almost surely, 2^6749279 is an apocalyptic number.

6749279 is a deficient number, since it is larger than the sum of its proper divisors (1).

6749279 is an equidigital number, since it uses as much as digits as its factorization.

6749279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 6749279 is about 2597.9374511331. The cubic root of 6749279 is about 188.9814283330.

The spelling of 6749279 in words is "six million, seven hundred forty-nine thousand, two hundred seventy-nine".