660712160 has 48 divisors (see below), whose sum is σ = 1575561456. Its totient is φ = 261808128.

The previous prime is 660712153. The next prime is 660712181. The reversal of 660712160 is 61217066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2177 + ... + 36416.

It is an arithmetic number, because the mean of its divisors is an integer number (32824197).

Almost surely, 2^660712160 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 660712160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787780728).

660712160 is an abundant number, since it is smaller than the sum of its proper divisors (914849296).

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

660712160 is a wasteful number, since it uses less digits than its factorization.

660712160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38715 (or 38707 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 660712160 is about 25704.3218156014. The cubic root of 660712160 is about 870.9718122818.

The spelling of 660712160 in words is "six hundred sixty million, seven hundred twelve thousand, one hundred sixty".