660327520 has 96 divisors (see below), whose sum is σ = 1650106080. Its totient is φ = 249016320.

The previous prime is 660327461. The next prime is 660327523. The reversal of 660327520 is 25723066.

660327520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×660327520³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660327523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 853854 + ... + 854626.

It is an arithmetic number, because the mean of its divisors is an integer number (17188605).

Almost surely, 2^660327520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660327520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825053040).

660327520 is an abundant number, since it is smaller than the sum of its proper divisors (989778560).

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

660327520 is a wasteful number, since it uses less digits than its factorization.

660327520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 660327520 is about 25696.8387160756. The cubic root of 660327520 is about 870.8027645739.

The spelling of 660327520 in words is "six hundred sixty million, three hundred twenty-seven thousand, five hundred twenty".