659940000 has 240 divisors, whose sum is σ = 2295615168. Its totient is φ = 165376000.

The previous prime is 659939947. The next prime is 659940011. The reversal of 659940000 is 49956.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1019677 + ... + 1020323.

Almost surely, 2^659940000 is an apocalyptic number.

659940000 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 659940000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1147807584).

659940000 is an abundant number, since it is smaller than the sum of its proper divisors (1635675168).

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

659940000 is a wasteful number, since it uses less digits than its factorization.

659940000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 659940000 is about 25689.2973823731. The cubic root of 659940000 is about 870.6323847188.

Adding to 659940000 its reverse (49956), we get a palindrome (659989956).

The spelling of 659940000 in words is "six hundred fifty-nine million, nine hundred forty thousand".