659085640 has 32 divisors (see below), whose sum is σ = 1484314560. Its totient is φ = 263390400.

The previous prime is 659085629. The next prime is 659085641. The reversal of 659085640 is 46580956.

It is not an unprimeable number, because it can be changed into a prime (659085641) by changing a digit.

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, 39805 + ... + 53875.

It is an arithmetic number, because the mean of its divisors is an integer number (46384830).

Almost surely, 2^659085640 is an apocalyptic number.

It is an amenable number.

659085640 is an abundant number, since it is smaller than the sum of its proper divisors (825228920).

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

659085640 is a wasteful number, since it uses less digits than its factorization.

659085640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15253 (or 15249 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 659085640 is about 25672.6632821762. The cubic root of 659085640 is about 870.2565148392.

The spelling of 659085640 in words is "six hundred fifty-nine million, eighty-five thousand, six hundred forty".