159993660 has 24 divisors (see below), whose sum is σ = 447982416. Its totient is φ = 42664960.

The previous prime is 159993641. The next prime is 159993677. The reversal of 159993660 is 66399951.

159993660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1333221 + ... + 1333340.

It is an arithmetic number, because the mean of its divisors is an integer number (18665934).

Almost surely, 2^159993660 is an apocalyptic number.

159993660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159993660 is an abundant number, since it is smaller than the sum of its proper divisors (287988756).

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

159993660 is a wasteful number, since it uses less digits than its factorization.

159993660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666573 (or 2666571 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 159993660 is about 12648.8600276863. The cubic root of 159993660 is about 542.8763526377.

It can be divided in two parts, 1599 and 93660, that added together give a palindrome (95259).

The spelling of 159993660 in words is "one hundred fifty-nine million, nine hundred ninety-three thousand, six hundred sixty".