6891011 has 2 divisors, whose sum is σ = 6891012. Its totient is φ = 6891010.

The previous prime is 6890969. The next prime is 6891013. The reversal of 6891011 is 1101986.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6891011 is a prime.

Together with 6891013, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (6891013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445505 + 3445506.

It is an arithmetic number, because the mean of its divisors is an integer number (3445506).

Almost surely, 2^6891011 is an apocalyptic number.

6891011 is a deficient number, since it is larger than the sum of its proper divisors (1).

6891011 is an equidigital number, since it uses as much as digits as its factorization.

6891011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 6891011 is about 2625.0735227799. The cubic root of 6891011 is about 190.2951184690.

Adding to 6891011 its reverse (1101986), we get a palindrome (7992997).

It can be divided in two parts, 68910 and 11, that added together give a cube (68921 = 41³).

The spelling of 6891011 in words is "six million, eight hundred ninety-one thousand, eleven".