2279986668 has 18 divisors (see below), whose sum is σ = 5763299724. Its totient is φ = 759995544.

The previous prime is 2279986663. The next prime is 2279986693. The reversal of 2279986668 is 8666899722.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (2279986661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31666446 + ... + 31666517.

It is an arithmetic number, because the mean of its divisors is an integer number (320183318).

Almost surely, 2^2279986668 is an apocalyptic number.

It is an amenable number.

2279986668 is an abundant number, since it is smaller than the sum of its proper divisors (3483313056).

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

2279986668 is a wasteful number, since it uses less digits than its factorization.

2279986668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63332973 (or 63332968 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The square root of 2279986668 is about 47749.2059410416. The cubic root of 2279986668 is about 1316.1663076685.

The spelling of 2279986668 in words is "two billion, two hundred seventy-nine million, nine hundred eighty-six thousand, six hundred sixty-eight".