284490866866 has 16 divisors (see below), whose sum is σ = 434279738520. Its totient is φ = 139751314560.

The previous prime is 284490866857. The next prime is 284490866867. The reversal of 284490866866 is 668668094482.

It can be written as a sum of positive squares in 4 ways, for example, as 220974266241 + 63516600625 = 470079^2 + 252025^2 .

It is not an unprimeable number, because it can be changed into a prime (284490866867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5062065 + ... + 5117956.

Almost surely, 2^284490866866 is an apocalyptic number.

284490866866 is a deficient number, since it is larger than the sum of its proper divisors (149788871654).

284490866866 is a wasteful number, since it uses less digits than its factorization.

284490866866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10180269.

The product of its (nonzero) digits is 191102976, while the sum is 67.

The spelling of 284490866866 in words is "two hundred eighty-four billion, four hundred ninety million, eight hundred sixty-six thousand, eight hundred sixty-six".