66159429 has 8 divisors (see below), whose sum is σ = 100814400. Its totient is φ = 37805376.

The previous prime is 66159371. The next prime is 66159439. The reversal of 66159429 is 92495166.

It is a happy number.

66159429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66159429 - 2¹³ = 66151237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66159439) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1575204 + ... + 1575245.

It is an arithmetic number, because the mean of its divisors is an integer number (12601800).

Almost surely, 2^66159429 is an apocalyptic number.

It is an amenable number.

66159429 is a deficient number, since it is larger than the sum of its proper divisors (34654971).

66159429 is a wasteful number, since it uses less digits than its factorization.

66159429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150459.

The product of its digits is 116640, while the sum is 42.

The square root of 66159429 is about 8133.8446628885. The cubic root of 66159429 is about 404.4491398245.

The spelling of 66159429 in words is "sixty-six million, one hundred fifty-nine thousand, four hundred twenty-nine".