659920844 has 48 divisors (see below), whose sum is σ = 1333221120. Its totient is φ = 282663360.

The previous prime is 659920837. The next prime is 659920867. The reversal of 659920844 is 448029956.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 162689 + ... + 166695.

It is an arithmetic number, because the mean of its divisors is an integer number (27775440).

Almost surely, 2^659920844 is an apocalyptic number.

It is an amenable number.

659920844 is an abundant number, since it is smaller than the sum of its proper divisors (673300276).

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

659920844 is a wasteful number, since it uses less digits than its factorization.

659920844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238 (or 4236 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 659920844 is about 25688.9245395754. The cubic root of 659920844 is about 870.6239607230.

The spelling of 659920844 in words is "six hundred fifty-nine million, nine hundred twenty thousand, eight hundred forty-four".