6394997 has 4 divisors (see below), whose sum is σ = 7308576. Its totient is φ = 5481420.

The previous prime is 6394981. The next prime is 6395047. The reversal of 6394997 is 7994936.

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 not a de Polignac number, because 6394997 - 2⁴ = 6394981 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁴ + 3¹³ + 9 + 4⁷ + 9 + 9⁷ + 7 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6394957) 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, 456779 + ... + 456792.

It is an arithmetic number, because the mean of its divisors is an integer number (1827144).

Almost surely, 2^6394997 is an apocalyptic number.

It is an amenable number.

6394997 is a deficient number, since it is larger than the sum of its proper divisors (913579).

6394997 is an equidigital number, since it uses as much as digits as its factorization.

6394997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913578.

The product of its digits is 367416, while the sum is 47.

The square root of 6394997 is about 2528.8331301215. The cubic root of 6394997 is about 185.6151618392.

It can be divided in two parts, 63949 and 97, that added together give a palindrome (64046).

The spelling of 6394997 in words is "six million, three hundred ninety-four thousand, nine hundred ninety-seven".