6221670 has 128 divisors (see below), whose sum is σ = 19160064. Its totient is φ = 1257984.

The previous prime is 6221651. The next prime is 6221671. The reversal of 6221670 is 761226.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6221670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221671) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117364 + ... + 117416.

It is an arithmetic number, because the mean of its divisors is an integer number (149688).

Almost surely, 2^6221670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6221670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9580032).

6221670 is an abundant number, since it is smaller than the sum of its proper divisors (12938394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6221670 is a wasteful number, since it uses less digits than its factorization.

6221670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 6221670 is about 2494.3275646955. The cubic root of 6221670 is about 183.9228370529.

Adding to 6221670 its reverse (761226), we get a palindrome (6982896).

The spelling of 6221670 in words is "six million, two hundred twenty-one thousand, six hundred seventy".