159634 has 4 divisors (see below), whose sum is σ = 239454. Its totient is φ = 79816.

The previous prime is 159631. The next prime is 159667. The reversal of 159634 is 436951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436951 = 17 ⋅25703.

It can be written as a sum of positive squares in only one way, i.e., 157609 + 2025 = 397^2 + 45^2 .

It is not an unprimeable number, because it can be changed into a prime (159631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39907 + ... + 39910.

2¹⁵⁹⁶³⁴ is an apocalyptic number.

159634 is a deficient number, since it is larger than the sum of its proper divisors (79820).

159634 is an equidigital number, since it uses as much as digits as its factorization.

159634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79819.

The product of its digits is 3240, while the sum is 28.

The square root of 159634 is about 399.5422380675. The cubic root of 159634 is about 54.2469258595.

The spelling of 159634 in words is "one hundred fifty-nine thousand, six hundred thirty-four".