2220613 has 4 divisors (see below), whose sum is σ = 2230540. Its totient is φ = 2210688.

The previous prime is 2220553. The next prime is 2220643. The reversal of 2220613 is 3160222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 1004004 = 1103^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220613 - 2¹³ = 2212421 is a prime.

It is a super-2 number, since 2×2220613² = 9862244191538, which contains 22 as substring.

It is a Duffinian number.

2220613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4620 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (557635).

2^2220613 is an apocalyptic number.

It is an amenable number.

2220613 is a deficient number, since it is larger than the sum of its proper divisors (9927).

2220613 is an equidigital number, since it uses as much as digits as its factorization.

2220613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9926.

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

The square root of 2220613 is about 1490.1721377076. The cubic root of 2220613 is about 130.4640809724.

Adding to 2220613 its reverse (3160222), we get a palindrome (5380835).

The spelling of 2220613 in words is "two million, two hundred twenty thousand, six hundred thirteen".