6394681 has 4 divisors (see below), whose sum is σ = 6490192. Its totient is φ = 6299172.

The previous prime is 6394657. The next prime is 6394709. The reversal of 6394681 is 1864936.

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 6394681 - 2¹⁹ = 5870393 is a prime.

It is a super-2 number, since 2×6394681² = 81783890183522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6394681.

It is not an unprimeable number, because it can be changed into a prime (6394651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47655 + ... + 47788.

It is an arithmetic number, because the mean of its divisors is an integer number (1622548).

Almost surely, 2^6394681 is an apocalyptic number.

It is an amenable number.

6394681 is a deficient number, since it is larger than the sum of its proper divisors (95511).

6394681 is an equidigital number, since it uses as much as digits as its factorization.

6394681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95510.

The product of its digits is 31104, while the sum is 37.

The square root of 6394681 is about 2528.7706499404. The cubic root of 6394681 is about 185.6121044827.

The spelling of 6394681 in words is "six million, three hundred ninety-four thousand, six hundred eighty-one".