6405331 has 2 divisors, whose sum is σ = 6405332. Its totient is φ = 6405330.

The previous prime is 6405283. The next prime is 6405353. The reversal of 6405331 is 1335046.

It is an a-pointer prime, because the next prime (6405353) can be obtained adding 6405331 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6405331 - 2⁹ = 6404819 is a prime.

It is a super-2 number, since 2×6405331² = 82056530439122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6405391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202665 + 3202666.

It is an arithmetic number, because the mean of its divisors is an integer number (3202666).

Almost surely, 2^6405331 is an apocalyptic number.

6405331 is a deficient number, since it is larger than the sum of its proper divisors (1).

6405331 is an equidigital number, since it uses as much as digits as its factorization.

6405331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 6405331 is about 2530.8755402034. The cubic root of 6405331 is about 185.7150896838.

The spelling of 6405331 in words is "six million, four hundred five thousand, three hundred thirty-one".