159747685 has 16 divisors (see below), whose sum is σ = 201689712. Its totient is φ = 121305600.

The previous prime is 159747641. The next prime is 159747697. The reversal of 159747685 is 586747951.

It can be written as a sum of positive squares in 8 ways, for example, as 8014561 + 151733124 = 2831^2 + 12318^2 .

It is not a de Polignac number, because 159747685 - 2⁹ = 159747173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2946 + ... + 18115.

It is an arithmetic number, because the mean of its divisors is an integer number (12605607).

Almost surely, 2^159747685 is an apocalyptic number.

It is an amenable number.

159747685 is a deficient number, since it is larger than the sum of its proper divisors (41942027).

159747685 is a wasteful number, since it uses less digits than its factorization.

159747685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21144.

The product of its digits is 2116800, while the sum is 52.

The square root of 159747685 is about 12639.1330794481. The cubic root of 159747685 is about 542.5980030638.

The spelling of 159747685 in words is "one hundred fifty-nine million, seven hundred forty-seven thousand, six hundred eighty-five".