6396842 has 4 divisors (see below), whose sum is σ = 9595266. Its totient is φ = 3198420.

The previous prime is 6396833. The next prime is 6396847. The reversal of 6396842 is 2486936.

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

It can be written as a sum of positive squares in only one way, i.e., 6295081 + 101761 = 2509^2 + 319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6396796 and 6396805.

It is not an unprimeable number, because it can be changed into a prime (6396847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599209 + ... + 1599212.

Almost surely, 2^6396842 is an apocalyptic number.

6396842 is a deficient number, since it is larger than the sum of its proper divisors (3198424).

6396842 is a wasteful number, since it uses less digits than its factorization.

6396842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198423.

The product of its digits is 62208, while the sum is 38.

The square root of 6396842 is about 2529.1978965672. The cubic root of 6396842 is about 185.6330105338.

The spelling of 6396842 in words is "six million, three hundred ninety-six thousand, eight hundred forty-two".