6769639 has 2 divisors, whose sum is σ = 6769640. Its totient is φ = 6769638.

The previous prime is 6769591. The next prime is 6769649. The reversal of 6769639 is 9369676.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6769639 - 2⁹ = 6769127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6769649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3384819 + 3384820.

It is an arithmetic number, because the mean of its divisors is an integer number (3384820).

Almost surely, 2^6769639 is an apocalyptic number.

6769639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6769639 is an equidigital number, since it uses as much as digits as its factorization.

6769639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 46.

The square root of 6769639 is about 2601.8529935413. The cubic root of 6769639 is about 189.1712658635.

The spelling of 6769639 in words is "six million, seven hundred sixty-nine thousand, six hundred thirty-nine".