6816151 has 2 divisors, whose sum is σ = 6816152. Its totient is φ = 6816150.

The previous prime is 6816149. The next prime is 6816157. The reversal of 6816151 is 1516186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6816151 - 2¹ = 6816149 is a prime.

It is a super-3 number, since 3×6816151³ (a number of 21 digits) contains 333 as substring.

Together with 6816149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6816157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3408075 + 3408076.

It is an arithmetic number, because the mean of its divisors is an integer number (3408076).

Almost surely, 2^6816151 is an apocalyptic number.

6816151 is a deficient number, since it is larger than the sum of its proper divisors (1).

6816151 is an equidigital number, since it uses as much as digits as its factorization.

6816151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 6816151 is about 2610.7759382988. The cubic root of 6816151 is about 189.6035222660.

The spelling of 6816151 in words is "six million, eight hundred sixteen thousand, one hundred fifty-one".