660001560 has 192 divisors, whose sum is σ = 2133341280. Its totient is φ = 163215360.

The previous prime is 660001513. The next prime is 660001567. The reversal of 660001560 is 65100066.

660001560 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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 660001560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660001567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2348620 + ... + 2348900.

Almost surely, 2^660001560 is an apocalyptic number.

660001560 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 660001560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066670640).

660001560 is an abundant number, since it is smaller than the sum of its proper divisors (1473339720).

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

660001560 is a wasteful number, since it uses less digits than its factorization.

660001560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 660001560 is about 25690.4955187711. The cubic root of 660001560 is about 870.6594550904.

The spelling of 660001560 in words is "six hundred sixty million, one thousand, five hundred sixty".