660648486 has 16 divisors (see below), whose sum is σ = 1322189568. Its totient is φ = 220067400.

The previous prime is 660648479. The next prime is 660648491. The reversal of 660648486 is 684846066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27370 + ... + 45501.

It is an arithmetic number, because the mean of its divisors is an integer number (82636848).

Almost surely, 2^660648486 is an apocalyptic number.

660648486 is an abundant number, since it is smaller than the sum of its proper divisors (661541082).

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

660648486 is a wasteful number, since it uses less digits than its factorization.

660648486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74387.

The product of its (nonzero) digits is 1327104, while the sum is 48.

The square root of 660648486 is about 25703.0832002700. The cubic root of 660648486 is about 870.9438323514.

The spelling of 660648486 in words is "six hundred sixty million, six hundred forty-eight thousand, four hundred eighty-six".