6819061 has 4 divisors (see below), whose sum is σ = 6828300. Its totient is φ = 6809824.

The previous prime is 6819049. The next prime is 6819067. The reversal of 6819061 is 1609186.

It is a happy number.

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 3632836 + 3186225 = 1906^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 6819061 - 2¹⁵ = 6786293 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 (6819067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (1707075).

Almost surely, 2^6819061 is an apocalyptic number.

It is an amenable number.

6819061 is a deficient number, since it is larger than the sum of its proper divisors (9239).

6819061 is an equidigital number, since it uses as much as digits as its factorization.

6819061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 6819061 is about 2611.3331844098. Note that the first 3 decimals coincide. The cubic root of 6819061 is about 189.6305007249.

The spelling of 6819061 in words is "six million, eight hundred nineteen thousand, sixty-one".