159897623 has 4 divisors (see below), whose sum is σ = 160044480. Its totient is φ = 159750768.

The previous prime is 159897601. The next prime is 159897629. The reversal of 159897623 is 326798951.

159897623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326798951 = 15329 ⋅21319.

It is a cyclic number.

It is not a de Polignac number, because 159897623 - 2¹⁶ = 159832087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159897629) 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, 71783 + ... + 73976.

It is an arithmetic number, because the mean of its divisors is an integer number (40011120).

Almost surely, 2^159897623 is an apocalyptic number.

159897623 is a deficient number, since it is larger than the sum of its proper divisors (146857).

159897623 is a wasteful number, since it uses less digits than its factorization.

159897623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146856.

The product of its digits is 816480, while the sum is 50.

The square root of 159897623 is about 12645.0631868726. The cubic root of 159897623 is about 542.7677094756.

The spelling of 159897623 in words is "one hundred fifty-nine million, eight hundred ninety-seven thousand, six hundred twenty-three".