6820016705 has 4 divisors (see below), whose sum is σ = 8184020052. Its totient is φ = 5456013360.

The previous prime is 6820016663. The next prime is 6820016737. The reversal of 6820016705 is 5076100286.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5064741889 + 1755274816 = 71167^2 + 41896^2 .

It is not a de Polignac number, because 6820016705 - 2¹² = 6820012609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682001666 + ... + 682001675.

It is an arithmetic number, because the mean of its divisors is an integer number (2046005013).

Almost surely, 2^6820016705 is an apocalyptic number.

It is an amenable number.

6820016705 is a deficient number, since it is larger than the sum of its proper divisors (1364003347).

6820016705 is a wasteful number, since it uses less digits than its factorization.

6820016705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364003346.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 6820016705 is about 82583.3924285022. The cubic root of 6820016705 is about 1896.3935934206.

The spelling of 6820016705 in words is "six billion, eight hundred twenty million, sixteen thousand, seven hundred five".