66079871 has 8 divisors (see below), whose sum is σ = 77632464. Its totient is φ = 55451520.

The previous prime is 66079859. The next prime is 66079877. The reversal of 66079871 is 17897066.

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 66079871 - 2⁶ = 66079807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66079877) 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, 230906 + ... + 231191.

It is an arithmetic number, because the mean of its divisors is an integer number (9704058).

Almost surely, 2^66079871 is an apocalyptic number.

66079871 is a deficient number, since it is larger than the sum of its proper divisors (11552593).

66079871 is a wasteful number, since it uses less digits than its factorization.

66079871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462121.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 66079871 is about 8128.9526385630. The cubic root of 66079871 is about 404.2869554785.

The spelling of 66079871 in words is "sixty-six million, seventy-nine thousand, eight hundred seventy-one".