159756660 has 216 divisors, whose sum is σ = 575134560. Its totient is φ = 35779968.

The previous prime is 159756637. The next prime is 159756661. The reversal of 159756660 is 66657951.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159756661) 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 71 ways as a sum of consecutive naturals, for example, 520227 + ... + 520533.

It is an arithmetic number, because the mean of its divisors is an integer number (2662660).

Almost surely, 2^159756660 is an apocalyptic number.

159756660 is a gapful number since it is divisible by the number (10) 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 159756660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287567280).

159756660 is an abundant number, since it is smaller than the sum of its proper divisors (415377900).

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

159756660 is a wasteful number, since it uses less digits than its factorization.

159756660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 159756660 is about 12639.4881225467. The cubic root of 159756660 is about 542.6081643501.

The spelling of 159756660 in words is "one hundred fifty-nine million, seven hundred fifty-six thousand, six hundred sixty".