66159 has 6 divisors (see below), whose sum is σ = 95576. Its totient is φ = 44100.

The previous prime is 66137. The next prime is 66161. The reversal of 66159 is 95166.

It is not a de Polignac number, because 66159 - 2⁹ = 65647 is a prime.

It is a Duffinian number.

66159 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66159.

It is not an unprimeable number, because it can be changed into a prime (66109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3667 + ... + 3684.

2⁶⁶¹⁵⁹ is an apocalyptic number.

66159 is a deficient number, since it is larger than the sum of its proper divisors (29417).

66159 is a wasteful number, since it uses less digits than its factorization.

66159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357 (or 7354 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 66159 is about 257.2139187525. The cubic root of 66159 is about 40.4448265628. Note that the first 3 decimals are identical.

It can be divided in two parts, 66 and 159, that added together give a square (225 = 15²).

The spelling of 66159 in words is "sixty-six thousand, one hundred fifty-nine".