66044171 has 8 divisors (see below), whose sum is σ = 69888000. Its totient is φ = 62237160.

The previous prime is 66044159. The next prime is 66044183. The reversal of 66044171 is 17144066.

It is an interprime number because it is at equal distance from previous prime (66044159) and next prime (66044183).

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

It is a de Polignac number, because none of the positive numbers 2^k-66044171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66044131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5471 + ... + 12728.

It is an arithmetic number, because the mean of its divisors is an integer number (8736000).

Almost surely, 2^66044171 is an apocalyptic number.

66044171 is a deficient number, since it is larger than the sum of its proper divisors (3843829).

66044171 is a wasteful number, since it uses less digits than its factorization.

66044171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18409.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 66044171 is about 8126.7564870617. The cubic root of 66044171 is about 404.2141363075.

The spelling of 66044171 in words is "sixty-six million, forty-four thousand, one hundred seventy-one".