6340891 has 2 divisors, whose sum is σ = 6340892. Its totient is φ = 6340890.

The previous prime is 6340883. The next prime is 6340897. The reversal of 6340891 is 1980436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6340891 - 2³ = 6340883 is a prime.

It is not a weakly prime, because it can be changed into another prime (6340897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3170445 + 3170446.

It is an arithmetic number, because the mean of its divisors is an integer number (3170446).

Almost surely, 2^6340891 is an apocalyptic number.

6340891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6340891 is an equidigital number, since it uses as much as digits as its factorization.

6340891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6340891 is about 2518.1125868396. The cubic root of 6340891 is about 185.0902019340.

The spelling of 6340891 in words is "six million, three hundred forty thousand, eight hundred ninety-one".