66260171 has 4 divisors (see below), whose sum is σ = 69141072. Its totient is φ = 63379272.

The previous prime is 66260167. The next prime is 66260179. The reversal of 66260171 is 17106266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66260171 - 2² = 66260167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66260179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440416 + ... + 1440461.

It is an arithmetic number, because the mean of its divisors is an integer number (17285268).

Almost surely, 2^66260171 is an apocalyptic number.

66260171 is a deficient number, since it is larger than the sum of its proper divisors (2880901).

66260171 is a wasteful number, since it uses less digits than its factorization.

66260171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880900.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 66260171 is about 8140.0350736345. The cubic root of 66260171 is about 404.6543227304.

The spelling of 66260171 in words is "sixty-six million, two hundred sixty thousand, one hundred seventy-one".