6271220 has 12 divisors (see below), whose sum is σ = 13169604. Its totient is φ = 2508480.

The previous prime is 6271219. The next prime is 6271247. The reversal of 6271220 is 221726.

It can be written as a sum of positive squares in 2 ways, for example, as 1378276 + 4892944 = 1174^2 + 2212^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 313561 = 6271220 / (6 + 2 + 7 + 1 + 2 + 2 + 0).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6271192 and 6271201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156761 + ... + 156800.

It is an arithmetic number, because the mean of its divisors is an integer number (1097467).

Almost surely, 2^6271220 is an apocalyptic number.

It is an amenable number.

6271220 is an abundant number, since it is smaller than the sum of its proper divisors (6898384).

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

6271220 is a wasteful number, since it uses less digits than its factorization.

6271220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313570 (or 313568 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 6271220 is about 2504.2404037951. The cubic root of 6271220 is about 184.4098065093.

Adding to 6271220 its reverse (221726), we get a palindrome (6492946).

The spelling of 6271220 in words is "six million, two hundred seventy-one thousand, two hundred twenty".