6396641 has 8 divisors (see below), whose sum is σ = 6824160. Its totient is φ = 5974848.

The previous prime is 6396631. The next prime is 6396659. The reversal of 6396641 is 1466936.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6396641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6396631) 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 7 ways as a sum of consecutive naturals, for example, 1010 + ... + 3716.

It is an arithmetic number, because the mean of its divisors is an integer number (853020).

Almost surely, 2^6396641 is an apocalyptic number.

It is an amenable number.

6396641 is a deficient number, since it is larger than the sum of its proper divisors (427519).

6396641 is a wasteful number, since it uses less digits than its factorization.

6396641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863.

The product of its digits is 23328, while the sum is 35.

The square root of 6396641 is about 2529.1581603372. The cubic root of 6396641 is about 185.6310662084.

The spelling of 6396641 in words is "six million, three hundred ninety-six thousand, six hundred forty-one".