66466671 has 8 divisors (see below), whose sum is σ = 88669824. Its totient is φ = 44287320.

The previous prime is 66466669. The next prime is 66466679. The reversal of 66466671 is 17666466.

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

It is not a de Polignac number, because 66466671 - 2¹ = 66466669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66466679) 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, 2140 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (11083728).

Almost surely, 2^66466671 is an apocalyptic number.

66466671 is a deficient number, since it is larger than the sum of its proper divisors (22203153).

66466671 is a wasteful number, since it uses less digits than its factorization.

66466671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11901.

The product of its digits is 217728, while the sum is 42.

The square root of 66466671 is about 8152.7094269329. The cubic root of 66466671 is about 405.0742555509.

The spelling of 66466671 in words is "sixty-six million, four hundred sixty-six thousand, six hundred seventy-one".