2220164 has 6 divisors (see below), whose sum is σ = 3885294. Its totient is φ = 1110080.

The previous prime is 2220157. The next prime is 2220187. The reversal of 2220164 is 4610222.

It can be written as a sum of positive squares in only one way, i.e., 2220100 + 64 = 1490^2 + 8^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277517 + ... + 277524.

It is an arithmetic number, because the mean of its divisors is an integer number (647549).

2^2220164 is an apocalyptic number.

It is an amenable number.

2220164 is a deficient number, since it is larger than the sum of its proper divisors (1665130).

2220164 is a wasteful number, since it uses less digits than its factorization.

2220164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555045 (or 555043 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2220164 is about 1490.0214763553. The cubic root of 2220164 is about 130.4552872563.

Adding to 2220164 its reverse (4610222), we get a palindrome (6830386).

It can be divided in two parts, 22201 and 64, that multiplied together give a square (1420864 = 1192²).

The spelling of 2220164 in words is "two million, two hundred twenty thousand, one hundred sixty-four".