66106871 has 8 divisors (see below), whose sum is σ = 70089600. Its totient is φ = 62174520.

The previous prime is 66106813. The next prime is 66106877. The reversal of 66106871 is 17860166.

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

It is a cyclic number.

It is not a de Polignac number, because 66106871 - 2¹⁰ = 66105847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66106877) 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, 9875 + ... + 15156.

It is an arithmetic number, because the mean of its divisors is an integer number (8761200).

Almost surely, 2^66106871 is an apocalyptic number.

66106871 is a deficient number, since it is larger than the sum of its proper divisors (3982729).

66106871 is a wasteful number, since it uses less digits than its factorization.

66106871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25189.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 66106871 is about 8130.6131995072. The cubic root of 66106871 is about 404.3420113841.

The spelling of 66106871 in words is "sixty-six million, one hundred six thousand, eight hundred seventy-one".