6394081 has 8 divisors (see below), whose sum is σ = 6676904. Its totient is φ = 6117120.

The previous prime is 6394043. The next prime is 6394093. The reversal of 6394081 is 1804936.

It can be written as a sum of positive squares in 4 ways, for example, as 435600 + 5958481 = 660^2 + 2441^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6394081 - 2⁷ = 6393953 is a prime.

It is a super-2 number, since 2×6394081² = 81768543669122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6394481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (834613).

Almost surely, 2^6394081 is an apocalyptic number.

6394081 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6394081 is a deficient number, since it is larger than the sum of its proper divisors (282823).

6394081 is a wasteful number, since it uses less digits than its factorization.

6394081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6394081 is about 2528.6520124367. The cubic root of 6394081 is about 185.6062990982.

The spelling of 6394081 in words is "six million, three hundred ninety-four thousand, eighty-one".