6394481 has 2 divisors, whose sum is σ = 6394482. Its totient is φ = 6394480.

The previous prime is 6394477. The next prime is 6394501. The reversal of 6394481 is 1844936.

6394481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3783025 + 2611456 = 1945^2 + 1616^2 .

It is a cyclic number.

It is not a de Polignac number, because 6394481 - 2² = 6394477 is a prime.

It is a super-2 number, since 2×6394481² = 81778774518722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6² + 3¹³ + 9⁷ + 4⁴ + 4⁷ + 8³ + 1 .

It is not a weakly prime, because it can be changed into another prime (6394441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197240 + 3197241.

It is an arithmetic number, because the mean of its divisors is an integer number (3197241).

Almost surely, 2^6394481 is an apocalyptic number.

It is an amenable number.

6394481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6394481 is an equidigital number, since it uses as much as digits as its factorization.

6394481 is an evil number, because the sum of its binary digits is even.

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

The square root of 6394481 is about 2528.7311047243. The cubic root of 6394481 is about 185.6101693949.

The spelling of 6394481 in words is "six million, three hundred ninety-four thousand, four hundred eighty-one".