6211220 has 24 divisors (see below), whose sum is σ = 13494600. Its totient is φ = 2398592.

The previous prime is 6211187. The next prime is 6211223. The reversal of 6211220 is 221126.

It can be written as a sum of positive squares in 4 ways, for example, as 2155024 + 4056196 = 1468^2 + 2014^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6211195 and 6211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6211223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4775 + ... + 5934.

It is an arithmetic number, because the mean of its divisors is an integer number (562275).

Almost surely, 2^6211220 is an apocalyptic number.

It is an amenable number.

6211220 is an abundant number, since it is smaller than the sum of its proper divisors (7283380).

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

6211220 is a wasteful number, since it uses less digits than its factorization.

6211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10747 (or 10745 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 6211220 is about 2492.2319314221. The cubic root of 6211220 is about 183.8198062631.

Adding to 6211220 its reverse (221126), we get a palindrome (6432346).

The spelling of 6211220 in words is "six million, two hundred eleven thousand, two hundred twenty".