6242779 has 2 divisors, whose sum is σ = 6242780. Its totient is φ = 6242778.

The previous prime is 6242771. The next prime is 6242809. The reversal of 6242779 is 9772426.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6242779 - 2³ = 6242771 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6⁷ + 2⁷ + 4¹⁰ + 2¹⁷ + 7² + 7² + 9⁷ .

6242779 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6242771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3121389 + 3121390.

It is an arithmetic number, because the mean of its divisors is an integer number (3121390).

Almost surely, 2^6242779 is an apocalyptic number.

6242779 is a deficient number, since it is larger than the sum of its proper divisors (1).

6242779 is an equidigital number, since it uses as much as digits as its factorization.

6242779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 6242779 is about 2498.5553826161. Note that the first 3 decimals coincide. The cubic root of 6242779 is about 184.1306078836.

It can be divided in two parts, 6242 and 779, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 6242779 in words is "six million, two hundred forty-two thousand, seven hundred seventy-nine".