6386381 has 4 divisors (see below), whose sum is σ = 6435264. Its totient is φ = 6337500.

The previous prime is 6386377. The next prime is 6386417. The reversal of 6386381 is 1836836.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6386381 - 2² = 6386377 is a prime.

It is a super-2 number, since 2×6386381² = 81571724554322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁴ + 3¹³ + 8 + 6⁵ + 3¹⁴ + 8 + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6386371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24245 + ... + 24506.

It is an arithmetic number, because the mean of its divisors is an integer number (1608816).

Almost surely, 2^6386381 is an apocalyptic number.

It is an amenable number.

6386381 is a deficient number, since it is larger than the sum of its proper divisors (48883).

6386381 is a wasteful number, since it uses less digits than its factorization.

6386381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48882.

The product of its digits is 20736, while the sum is 35.

The square root of 6386381 is about 2527.1290034345. The cubic root of 6386381 is about 185.5317644062.

The spelling of 6386381 in words is "six million, three hundred eighty-six thousand, three hundred eighty-one".