159787656 has 192 divisors, whose sum is σ = 518094720. Its totient is φ = 43545600.

The previous prime is 159787637. The next prime is 159787657. The reversal of 159787656 is 656787951.

It is not an unprimeable number, because it can be changed into a prime (159787657) 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, 1582006 + ... + 1582106.

It is an arithmetic number, because the mean of its divisors is an integer number (2698410).

Almost surely, 2^159787656 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 159787656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259047360).

159787656 is an abundant number, since it is smaller than the sum of its proper divisors (358307064).

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

159787656 is a wasteful number, since it uses less digits than its factorization.

159787656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 229 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 159787656 is about 12640.7142203279. The cubic root of 159787656 is about 542.6432543740.

It can be divided in two parts, 1597 and 87656, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 159787656 in words is "one hundred fifty-nine million, seven hundred eighty-seven thousand, six hundred fifty-six".