660147587648 has 28 divisors (see below), whose sum is σ = 1310308290732. Its totient is φ = 329991168000.

The previous prime is 660147587609. The next prime is 660147587681. The reversal of 660147587648 is 846785741066.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90653983744 + 569493603904 = 301088^2 + 754648^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1032965 + ... + 1545092.

It is an arithmetic number, because the mean of its divisors is an integer number (46796724669).

Almost surely, 2^660147587648 is an apocalyptic number.

It is an amenable number.

660147587648 is a deficient number, since it is larger than the sum of its proper divisors (650160703084).

660147587648 is a wasteful number, since it uses less digits than its factorization.

660147587648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582070 (or 2582060 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 62.

The spelling of 660147587648 in words is "six hundred sixty billion, one hundred forty-seven million, five hundred eighty-seven thousand, six hundred forty-eight".