6721411 has 2 divisors, whose sum is σ = 6721412. Its totient is φ = 6721410.

The previous prime is 6721387. The next prime is 6721427. The reversal of 6721411 is 1141276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6721411 - 2⁷ = 6721283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6721711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360705 + 3360706.

It is an arithmetic number, because the mean of its divisors is an integer number (3360706).

Almost surely, 2^6721411 is an apocalyptic number.

6721411 is a deficient number, since it is larger than the sum of its proper divisors (1).

6721411 is an equidigital number, since it uses as much as digits as its factorization.

6721411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 22.

The square root of 6721411 is about 2592.5684176122. The cubic root of 6721411 is about 188.7209659594.

Adding to 6721411 its reverse (1141276), we get a palindrome (7862687).

The spelling of 6721411 in words is "six million, seven hundred twenty-one thousand, four hundred eleven".