159686901 has 12 divisors (see below), whose sum is σ = 251628000. Its totient is φ = 96779880.

The previous prime is 159686873. The next prime is 159686909. The reversal of 159686901 is 109686951.

It is not a de Polignac number, because 159686901 - 2⁵ = 159686869 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159686909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806401 + ... + 806598.

It is an arithmetic number, because the mean of its divisors is an integer number (20969000).

Almost surely, 2^159686901 is an apocalyptic number.

159686901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

159686901 is a deficient number, since it is larger than the sum of its proper divisors (91941099).

159686901 is a wasteful number, since it uses less digits than its factorization.

159686901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613016 (or 1613013 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 159686901 is about 12636.7282553674. The cubic root of 159686901 is about 542.5291748133.

The spelling of 159686901 in words is "one hundred fifty-nine million, six hundred eighty-six thousand, nine hundred one".