6861211 has 4 divisors (see below), whose sum is σ = 7841392. Its totient is φ = 5881032.

The previous prime is 6861203. The next prime is 6861241. The reversal of 6861211 is 1121686.

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 6861211 - 2³ = 6861203 is a prime.

It is a Duffinian number.

6861211 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6861241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490080 + ... + 490093.

It is an arithmetic number, because the mean of its divisors is an integer number (1960348).

Almost surely, 2^6861211 is an apocalyptic number.

6861211 is a deficient number, since it is larger than the sum of its proper divisors (980181).

6861211 is an equidigital number, since it uses as much as digits as its factorization.

6861211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980180.

The product of its digits is 576, while the sum is 25.

The square root of 6861211 is about 2619.3913415143. The cubic root of 6861211 is about 190.0204133192.

Adding to 6861211 its reverse (1121686), we get a palindrome (7982897).

The spelling of 6861211 in words is "six million, eight hundred sixty-one thousand, two hundred eleven".