6401335 has 4 divisors (see below), whose sum is σ = 7681608. Its totient is φ = 5121064.

The previous prime is 6401327. The next prime is 6401341. The reversal of 6401335 is 5331046.

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

It is a cyclic number.

It is not a de Polignac number, because 6401335 - 2³ = 6401327 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 640129 + ... + 640138.

It is an arithmetic number, because the mean of its divisors is an integer number (1920402).

Almost surely, 2^6401335 is an apocalyptic number.

6401335 is a deficient number, since it is larger than the sum of its proper divisors (1280273).

6401335 is a wasteful number, since it uses less digits than its factorization.

6401335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280272.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 6401335 is about 2530.0859669189. The cubic root of 6401335 is about 185.6764618660.

The spelling of 6401335 in words is "six million, four hundred one thousand, three hundred thirty-five".