660794760 has 448 divisors, whose sum is σ = 2493089280. Its totient is φ = 156764160.

The previous prime is 660794753. The next prime is 660794773. The reversal of 660794760 is 67497066.

660794760 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 an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 15367299 + ... + 15367341.

Almost surely, 2^660794760 is an apocalyptic number.

660794760 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 660794760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246544640).

660794760 is an abundant number, since it is smaller than the sum of its proper divisors (1832294520).

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

660794760 is a wasteful number, since it uses less digits than its factorization.

660794760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 660794760 is about 25705.9284990836. The cubic root of 660794760 is about 871.0081060863.

The spelling of 660794760 in words is "six hundred sixty million, seven hundred ninety-four thousand, seven hundred sixty".