6404935 has 4 divisors (see below), whose sum is σ = 7685928. Its totient is φ = 5123944.

The previous prime is 6404929. The next prime is 6404987. The reversal of 6404935 is 5394046.

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 6404935 - 2³ = 6404927 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6404897 and 6404906.

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, 640489 + ... + 640498.

It is an arithmetic number, because the mean of its divisors is an integer number (1921482).

Almost surely, 2^6404935 is an apocalyptic number.

6404935 is a deficient number, since it is larger than the sum of its proper divisors (1280993).

6404935 is a wasteful number, since it uses less digits than its factorization.

6404935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280992.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 6404935 is about 2530.7973051985. The cubic root of 6404935 is about 185.7112624191.

The spelling of 6404935 in words is "six million, four hundred four thousand, nine hundred thirty-five".