6221871 has 12 divisors (see below), whose sum is σ = 9081072. Its totient is φ = 4104576.

The previous prime is 6221869. The next prime is 6221879. The reversal of 6221871 is 1781226.

It is not a de Polignac number, because 6221871 - 2¹ = 6221869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2691 + ... + 4436.

It is an arithmetic number, because the mean of its divisors is an integer number (756756).

Almost surely, 2^6221871 is an apocalyptic number.

6221871 is a deficient number, since it is larger than the sum of its proper divisors (2859201).

6221871 is a wasteful number, since it uses less digits than its factorization.

6221871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7230 (or 7227 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 6221871 is about 2494.3678557903. The cubic root of 6221871 is about 183.9248176621.

The spelling of 6221871 in words is "six million, two hundred twenty-one thousand, eight hundred seventy-one".