6387381 has 48 divisors (see below), whose sum is σ = 12405120. Its totient is φ = 3058560.

The previous prime is 6387379. The next prime is 6387383. The reversal of 6387381 is 1837836.

It is an interprime number because it is at equal distance from previous prime (6387379) and next prime (6387383).

It is not a de Polignac number, because 6387381 - 2¹ = 6387379 is a prime.

It is a super-2 number, since 2×6387381² = 81597272078322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6387383) 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 in 47 ways as a sum of consecutive naturals, for example, 8655 + ... + 9363.

It is an arithmetic number, because the mean of its divisors is an integer number (258440).

Almost surely, 2^6387381 is an apocalyptic number.

It is an amenable number.

6387381 is a deficient number, since it is larger than the sum of its proper divisors (6017739).

6387381 is a wasteful number, since it uses less digits than its factorization.

6387381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 743 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 6387381 is about 2527.3268486684. The cubic root of 6387381 is about 185.5414476202.

The spelling of 6387381 in words is "six million, three hundred eighty-seven thousand, three hundred eighty-one".