6769421 has 2 divisors, whose sum is σ = 6769422. Its totient is φ = 6769420.

The previous prime is 6769403. The next prime is 6769423. The reversal of 6769421 is 1249676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4351396 + 2418025 = 2086^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 6769421 - 2²² = 2575117 is a prime.

It is a Sophie Germain prime.

Together with 6769423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6769423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3384710 + 3384711.

It is an arithmetic number, because the mean of its divisors is an integer number (3384711).

Almost surely, 2^6769421 is an apocalyptic number.

It is an amenable number.

6769421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6769421 is an equidigital number, since it uses as much as digits as its factorization.

6769421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 6769421 is about 2601.8110999840. The cubic root of 6769421 is about 189.1692352393.

The spelling of 6769421 in words is "six million, seven hundred sixty-nine thousand, four hundred twenty-one".