660081324 has 96 divisors (see below), whose sum is σ = 1849881600. Its totient is φ = 179106048.

The previous prime is 660081319. The next prime is 660081329. The reversal of 660081324 is 423180066.

It is an interprime number because it is at equal distance from previous prime (660081319) and next prime (660081329).

It is a junction number, because it is equal to n+sod(n) for n = 660081291 and 660081300.

It is not an unprimeable number, because it can be changed into a prime (660081329) 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 31 ways as a sum of consecutive naturals, for example, 286722 + ... + 289014.

It is an arithmetic number, because the mean of its divisors is an integer number (19269600).

Almost surely, 2^660081324 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 660081324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924940800).

660081324 is an abundant number, since it is smaller than the sum of its proper divisors (1189800276).

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

660081324 is a wasteful number, since it uses less digits than its factorization.

660081324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 2477 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 660081324 is about 25692.0478747802. The cubic root of 660081324 is about 870.6945279789.

The spelling of 660081324 in words is "six hundred sixty million, eighty-one thousand, three hundred twenty-four".