2613220 has 24 divisors (see below), whose sum is σ = 5524344. Its totient is φ = 1038336.

The previous prime is 2613211. The next prime is 2613227. The reversal of 2613220 is 223162.

It can be written as a sum of positive squares in 4 ways, for example, as 692224 + 1920996 = 832^2 + 1386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2613194 and 2613203.

It is not an unprimeable number, because it can be changed into a prime (2613227) 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, 3522 + ... + 4198.

It is an arithmetic number, because the mean of its divisors is an integer number (230181).

2^2613220 is an apocalyptic number.

2613220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2613220 is an abundant number, since it is smaller than the sum of its proper divisors (2911124).

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

2613220 is a wasteful number, since it uses less digits than its factorization.

2613220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2613220 is about 1616.5456999417. The cubic root of 2613220 is about 137.7395493624.

Adding to 2613220 its reverse (223162), we get a palindrome (2836382).

It can be divided in two parts, 261 and 3220, that added together give a square (3481 = 59²).

The spelling of 2613220 in words is "two million, six hundred thirteen thousand, two hundred twenty".