2220066776 has 8 divisors (see below), whose sum is σ = 4162625220. Its totient is φ = 1110033384.

The previous prime is 2220066763. The next prime is 2220066787. The reversal of 2220066776 is 6776600222.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138754166 + ... + 138754181.

Almost surely, 2^2220066776 is an apocalyptic number.

It is an amenable number.

2220066776 is a deficient number, since it is larger than the sum of its proper divisors (1942558444).

2220066776 is a wasteful number, since it uses less digits than its factorization.

2220066776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277508353 (or 277508349 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 2220066776 is about 47117.5845730657. The cubic root of 2220066776 is about 1304.5338295706.

Adding to 2220066776 its reverse (6776600222), we get a palindrome (8996666998).

The spelling of 2220066776 in words is "two billion, two hundred twenty million, sixty-six thousand, seven hundred seventy-six".