6820195 has 4 divisors (see below), whose sum is σ = 8184240. Its totient is φ = 5456152.

The previous prime is 6820181. The next prime is 6820207. The reversal of 6820195 is 5910286.

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 6820195 - 2⁷ = 6820067 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 682015 + ... + 682024.

It is an arithmetic number, because the mean of its divisors is an integer number (2046060).

Almost surely, 2^6820195 is an apocalyptic number.

6820195 is a deficient number, since it is larger than the sum of its proper divisors (1364045).

6820195 is a wasteful number, since it uses less digits than its factorization.

6820195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364044.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 6820195 is about 2611.5503058528. The cubic root of 6820195 is about 189.6410119018.

Subtracting from 6820195 its reverse (5910286), we obtain a palindrome (909909).

The spelling of 6820195 in words is "six million, eight hundred twenty thousand, one hundred ninety-five".