2220601 has 6 divisors (see below), whose sum is σ = 2277806. Its totient is φ = 2164800.

The previous prime is 2220553. The next prime is 2220643. The reversal of 2220601 is 1060222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 15376 + 2205225 = 124^2 + 1485^2 .

It is not a de Polignac number, because 2220601 - 2⁹ = 2220089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021 + ... + 2341.

2^2220601 is an apocalyptic number.

It is an amenable number.

2220601 is a deficient number, since it is larger than the sum of its proper divisors (57205).

2220601 is an equidigital number, since it uses as much as digits as its factorization.

2220601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2220601 is about 1490.1681113217. The cubic root of 2220601 is about 130.4638459665.

Adding to 2220601 its reverse (1060222), we get a palindrome (3280823).

The spelling of 2220601 in words is "two million, two hundred twenty thousand, six hundred one".