6385081 has 4 divisors (see below), whose sum is σ = 6760692. Its totient is φ = 6009472.

The previous prime is 6385063. The next prime is 6385087. The reversal of 6385081 is 1805836.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5546025 + 839056 = 2355^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 6385081 - 2⁷ = 6384953 is a prime.

It is a super-2 number, since 2×6385081² = 81538518753122, which contains 22 as substring.

It is a Duffinian number.

6385081 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6385087) 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 3 ways as a sum of consecutive naturals, for example, 187780 + ... + 187813.

It is an arithmetic number, because the mean of its divisors is an integer number (1690173).

Almost surely, 2^6385081 is an apocalyptic number.

It is an amenable number.

6385081 is a deficient number, since it is larger than the sum of its proper divisors (375611).

6385081 is a wasteful number, since it uses less digits than its factorization.

6385081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375610.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 6385081 is about 2526.8717814721. The cubic root of 6385081 is about 185.5191747167.

The spelling of 6385081 in words is "six million, three hundred eighty-five thousand, eighty-one".