66466887 has 8 divisors (see below), whose sum is σ = 89744640. Its totient is φ = 43750200.

The previous prime is 66466879. The next prime is 66466901. The reversal of 66466887 is 78866466.

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

It is not a de Polignac number, because 66466887 - 2³ = 66466879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66466877) 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, 139989 + ... + 140462.

It is an arithmetic number, because the mean of its divisors is an integer number (11218080).

Almost surely, 2^66466887 is an apocalyptic number.

66466887 is a deficient number, since it is larger than the sum of its proper divisors (23277753).

66466887 is a wasteful number, since it uses less digits than its factorization.

66466887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280533.

The product of its digits is 2322432, while the sum is 51.

The square root of 66466887 is about 8152.7226740519. The cubic root of 66466887 is about 405.0746943470.

The spelling of 66466887 in words is "sixty-six million, four hundred sixty-six thousand, eight hundred eighty-seven".