659668320 has 192 divisors, whose sum is σ = 2320980480. Its totient is φ = 174988800.

The previous prime is 659668319. The next prime is 659668337. The reversal of 659668320 is 23866956.

It is a happy number.

659668320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1343275 + ... + 1343765.

It is an arithmetic number, because the mean of its divisors is an integer number (12088440).

Almost surely, 2^659668320 is an apocalyptic number.

659668320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659668320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160490240).

659668320 is an abundant number, since it is smaller than the sum of its proper divisors (1661312160).

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

659668320 is a wasteful number, since it uses less digits than its factorization.

659668320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 659668320 is about 25684.0090328593. The cubic root of 659668320 is about 870.5128961431.

The spelling of 659668320 in words is "six hundred fifty-nine million, six hundred sixty-eight thousand, three hundred twenty".