6221985 has 32 divisors (see below), whose sum is σ = 12413952. Its totient is φ = 2585280.

The previous prime is 6221981. The next prime is 6221989. The reversal of 6221985 is 5891226.

6221985 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6221981) and next prime (6221989).

It is not a de Polignac number, because 6221985 - 2² = 6221981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

6221985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6221981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1539 + ... + 3848.

It is an arithmetic number, because the mean of its divisors is an integer number (387936).

Almost surely, 2^6221985 is an apocalyptic number.

It is an amenable number.

6221985 is a deficient number, since it is larger than the sum of its proper divisors (6191967).

6221985 is a wasteful number, since it uses less digits than its factorization.

6221985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413.

The product of its digits is 8640, while the sum is 33.

The square root of 6221985 is about 2494.3907071668. The cubic root of 6221985 is about 183.9259409738.

The spelling of 6221985 in words is "six million, two hundred twenty-one thousand, nine hundred eighty-five".