6381321 has 8 divisors (see below), whose sum is σ = 8956320. Its totient is φ = 4030272.

The previous prime is 6381317. The next prime is 6381337. The reversal of 6381321 is 1231836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6381321 - 2² = 6381317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6381291 and 6381300.

It is not an unprimeable number, because it can be changed into a prime (6381371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55920 + ... + 56033.

It is an arithmetic number, because the mean of its divisors is an integer number (1119540).

Almost surely, 2^6381321 is an apocalyptic number.

It is an amenable number.

6381321 is a deficient number, since it is larger than the sum of its proper divisors (2574999).

6381321 is a wasteful number, since it uses less digits than its factorization.

6381321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111975.

The product of its digits is 864, while the sum is 24.

The square root of 6381321 is about 2526.1276689827. The cubic root of 6381321 is about 185.4827518394.

The spelling of 6381321 in words is "six million, three hundred eighty-one thousand, three hundred twenty-one".