6691411 has 2 divisors, whose sum is σ = 6691412. Its totient is φ = 6691410.

The previous prime is 6691403. The next prime is 6691423. The reversal of 6691411 is 1141966.

6691411 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6691411 - 2³ = 6691403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6691411.

It is not a weakly prime, because it can be changed into another prime (6691471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345705 + 3345706.

It is an arithmetic number, because the mean of its divisors is an integer number (3345706).

Almost surely, 2^6691411 is an apocalyptic number.

6691411 is a deficient number, since it is larger than the sum of its proper divisors (1).

6691411 is an equidigital number, since it uses as much as digits as its factorization.

6691411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 28.

The square root of 6691411 is about 2586.7761789533. The cubic root of 6691411 is about 188.4397713708.

It can be divided in two parts, 669 and 1411, that added together give a triangular number (2080 = T₆₄).

The spelling of 6691411 in words is "six million, six hundred ninety-one thousand, four hundred eleven".