6381667 has 2 divisors, whose sum is σ = 6381668. Its totient is φ = 6381666.

The previous prime is 6381659. The next prime is 6381671. The reversal of 6381667 is 7661836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6381667 - 2³ = 6381659 is a prime.

It is not a weakly prime, because it can be changed into another prime (6381607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190833 + 3190834.

It is an arithmetic number, because the mean of its divisors is an integer number (3190834).

Almost surely, 2^6381667 is an apocalyptic number.

6381667 is the 1459-th hex number.

6381667 is a deficient number, since it is larger than the sum of its proper divisors (1).

6381667 is an equidigital number, since it uses as much as digits as its factorization.

6381667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 6381667 is about 2526.1961523207. The cubic root of 6381667 is about 185.4861041167.

The spelling of 6381667 in words is "six million, three hundred eighty-one thousand, six hundred sixty-seven".