6820108405 has 16 divisors (see below), whose sum is σ = 8965205568. Its totient is φ = 4939488000.

The previous prime is 6820108397. The next prime is 6820108453. The reversal of 6820108405 is 5048010286.

It is not a de Polignac number, because 6820108405 - 2³ = 6820108397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244011 + ... + 270520.

It is an arithmetic number, because the mean of its divisors is an integer number (560325348).

Almost surely, 2^6820108405 is an apocalyptic number.

It is an amenable number.

6820108405 is a deficient number, since it is larger than the sum of its proper divisors (2145097163).

6820108405 is a wasteful number, since it uses less digits than its factorization.

6820108405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514788.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 6820108405 is about 82583.9476230096. The cubic root of 6820108405 is about 1896.4020928384.

The spelling of 6820108405 in words is "six billion, eight hundred twenty million, one hundred eight thousand, four hundred five".