6396905 has 8 divisors (see below), whose sum is σ = 7689984. Its totient is φ = 5108400.

The previous prime is 6396877. The next prime is 6396911. The reversal of 6396905 is 5096936.

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

It is not a de Polignac number, because 6396905 - 2¹² = 6392809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4310 + ... + 5600.

It is an arithmetic number, because the mean of its divisors is an integer number (961248).

Almost surely, 2^6396905 is an apocalyptic number.

It is an amenable number.

6396905 is a deficient number, since it is larger than the sum of its proper divisors (1293079).

6396905 is a wasteful number, since it uses less digits than its factorization.

6396905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 6396905 is about 2529.2103510780. The cubic root of 6396905 is about 185.6336199408.

The spelling of 6396905 in words is "six million, three hundred ninety-six thousand, nine hundred five".