2220770 has 16 divisors (see below), whose sum is σ = 4029048. Its totient is φ = 881280.

The previous prime is 2220749. The next prime is 2220773. The reversal of 2220770 is 770222.

2220770 = T₉₄₀ + T₉₄₁ + ... + T₉₄₄.

It can be written as a sum of positive squares in 4 ways, for example, as 2053489 + 167281 = 1433^2 + 409^2 .

It is not an unprimeable number, because it can be changed into a prime (2220773) 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, 560 + ... + 2180.

2^2220770 is an apocalyptic number.

2220770 is a deficient number, since it is larger than the sum of its proper divisors (1808278).

2220770 is a wasteful number, since it uses less digits than its factorization.

2220770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 2220770 is about 1490.2248152544. The cubic root of 2220770 is about 130.4671555556.

Adding to 2220770 its reverse (770222), we get a palindrome (2990992).

The spelling of 2220770 in words is "two million, two hundred twenty thousand, seven hundred seventy".