6381568 has 56 divisors (see below), whose sum is σ = 13761720. Its totient is φ = 2949120.

The previous prime is 6381563. The next prime is 6381569. The reversal of 6381568 is 8651836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155628 + ... + 155668.

It is an arithmetic number, because the mean of its divisors is an integer number (245745).

Almost surely, 2^6381568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6381568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6880860).

6381568 is an abundant number, since it is smaller than the sum of its proper divisors (7380152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6381568 is an equidigital number, since it uses as much as digits as its factorization.

6381568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 62 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 6381568 is about 2526.1765575668. The cubic root of 6381568 is about 185.4851449515.

The spelling of 6381568 in words is "six million, three hundred eighty-one thousand, five hundred sixty-eight".