159609668 has 12 divisors (see below), whose sum is σ = 295747452. Its totient is φ = 75110400.

The previous prime is 159609661. The next prime is 159609683. The reversal of 159609668 is 866906951.

It can be written as a sum of positive squares in 2 ways, for example, as 99361024 + 60248644 = 9968^2 + 7762^2 .

It is a super-2 number, since 2×159609668² = 50950492238140448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159609661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173533 + ... + 1173668.

It is an arithmetic number, because the mean of its divisors is an integer number (24645621).

Almost surely, 2^159609668 is an apocalyptic number.

It is an amenable number.

159609668 is a deficient number, since it is larger than the sum of its proper divisors (136137784).

159609668 is a wasteful number, since it uses less digits than its factorization.

159609668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347222 (or 2347220 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 159609668 is about 12633.6719919428. The cubic root of 159609668 is about 542.4416954761.

The spelling of 159609668 in words is "one hundred fifty-nine million, six hundred nine thousand, six hundred sixty-eight".