6806405 has 8 divisors (see below), whose sum is σ = 8193312. Its totient is φ = 5428048.

The previous prime is 6806383. The next prime is 6806407. The reversal of 6806405 is 5046086.

6806405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6806405 - 2¹⁶ = 6740869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6806407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227 + ... + 3696.

It is an arithmetic number, because the mean of its divisors is an integer number (1024164).

Almost surely, 2^6806405 is an apocalyptic number.

It is an amenable number.

6806405 is a deficient number, since it is larger than the sum of its proper divisors (1386907).

6806405 is a wasteful number, since it uses less digits than its factorization.

6806405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 6806405 is about 2608.9087757145. The cubic root of 6806405 is about 189.5131116442.

The spelling of 6806405 in words is "six million, eight hundred six thousand, four hundred five".