2220001566 has 32 divisors (see below), whose sum is σ = 4533096960. Its totient is φ = 724542624.

The previous prime is 2220001523. The next prime is 2220001573. The reversal of 2220001566 is 6651000222.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153015 + ... + 166893.

It is an arithmetic number, because the mean of its divisors is an integer number (141659280).

Almost surely, 2^2220001566 is an apocalyptic number.

2220001566 is an abundant number, since it is smaller than the sum of its proper divisors (2313095394).

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

2220001566 is a wasteful number, since it uses less digits than its factorization.

2220001566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14440.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2220001566 is about 47116.8925758055. The cubic root of 2220001566 is about 1304.5210567590.

Adding to 2220001566 its reverse (6651000222), we get a palindrome (8871001788).

The spelling of 2220001566 in words is "two billion, two hundred twenty million, one thousand, five hundred sixty-six".