66284870628 has 24 divisors (see below), whose sum is σ = 154684494720. Its totient is φ = 22092128800.

The previous prime is 66284870627. The next prime is 66284870651. The reversal of 66284870628 is 82607848266.

It is a super-2 number, since 2×66284870628² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66284870621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254748 + ... + 444371.

It is an arithmetic number, because the mean of its divisors is an integer number (6445187280).

Almost surely, 2^66284870628 is an apocalyptic number.

It is an amenable number.

66284870628 is an abundant number, since it is smaller than the sum of its proper divisors (88399624092).

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

66284870628 is a wasteful number, since it uses less digits than its factorization.

66284870628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707027 (or 707025 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 57.

The spelling of 66284870628 in words is "sixty-six billion, two hundred eighty-four million, eight hundred seventy thousand, six hundred twenty-eight".