6170220 has 144 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 1369728.

The previous prime is 6170173. The next prime is 6170221. The reversal of 6170220 is 220716.

It is a happy number.

It is a super-2 number, since 2×6170220² = 76143229696800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 6170193 and 6170202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6170221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74299 + ... + 74381.

It is an arithmetic number, because the mean of its divisors is an integer number (152880).

Almost surely, 2^6170220 is an apocalyptic number.

6170220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6170220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11007360).

6170220 is an abundant number, since it is smaller than the sum of its proper divisors (15844500).

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

6170220 is a wasteful number, since it uses less digits than its factorization.

6170220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 6170220 is about 2483.9927536126. The cubic root of 6170220 is about 183.4144507886.

Adding to 6170220 its reverse (220716), we get a palindrome (6390936).

The spelling of 6170220 in words is "six million, one hundred seventy thousand, two hundred twenty".