6403895 has 8 divisors (see below), whose sum is σ = 7699104. Its totient is φ = 5113504.

The previous prime is 6403889. The next prime is 6403907. The reversal of 6403895 is 5983046.

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

It is a cyclic number.

It is not a de Polignac number, because 6403895 - 2²⁰ = 5355319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182 + ... + 4788.

It is an arithmetic number, because the mean of its divisors is an integer number (962388).

Almost surely, 2^6403895 is an apocalyptic number.

6403895 is a deficient number, since it is larger than the sum of its proper divisors (1295209).

6403895 is a wasteful number, since it uses less digits than its factorization.

6403895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 6403895 is about 2530.5918280118. The cubic root of 6403895 is about 185.7012102657.

The spelling of 6403895 in words is "six million, four hundred three thousand, eight hundred ninety-five".