66159670 has 8 divisors (see below), whose sum is σ = 119087424. Its totient is φ = 26463864.

The previous prime is 66159659. The next prime is 66159677. The reversal of 66159670 is 7695166.

66159670 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66159677) 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 3 ways as a sum of consecutive naturals, for example, 3307974 + ... + 3307993.

It is an arithmetic number, because the mean of its divisors is an integer number (14885928).

Almost surely, 2^66159670 is an apocalyptic number.

66159670 is a deficient number, since it is larger than the sum of its proper divisors (52927754).

66159670 is a wasteful number, since it uses less digits than its factorization.

66159670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615974.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 66159670 is about 8133.8594775174. The cubic root of 66159670 is about 404.4496309217.

The spelling of 66159670 in words is "sixty-six million, one hundred fifty-nine thousand, six hundred seventy".