660760000 has 70 divisors (see below), whose sum is σ = 1638569240. Its totient is φ = 264288000.

The previous prime is 660759997. The next prime is 660760007. The reversal of 660760000 is 67066.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660760007) 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 9 ways as a sum of consecutive naturals, for example, 31741 + ... + 48259.

It is an arithmetic number, because the mean of its divisors is an integer number (23408132).

Almost surely, 2^660760000 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 660760000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819284620).

660760000 is an abundant number, since it is smaller than the sum of its proper divisors (977809240).

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

660760000 is an equidigital number, since it uses as much as digits as its factorization.

660760000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16551 (or 16526 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 660760000 is about 25705.2523815659. The cubic root of 660760000 is about 870.9928331784.

The spelling of 660760000 in words is "six hundred sixty million, seven hundred sixty thousand".