66877163 has 4 divisors (see below), whose sum is σ = 66893568. Its totient is φ = 66860760.

The previous prime is 66877159. The next prime is 66877177. The reversal of 66877163 is 36177866.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66877163 - 2² = 66877159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66877183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (16723392).

Almost surely, 2^66877163 is an apocalyptic number.

66877163 is a deficient number, since it is larger than the sum of its proper divisors (16405).

66877163 is an equidigital number, since it uses as much as digits as its factorization.

66877163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16404.

The product of its digits is 254016, while the sum is 44.

The square root of 66877163 is about 8177.8458655076. The cubic root of 66877163 is about 405.9064450732.

The spelling of 66877163 in words is "sixty-six million, eight hundred seventy-seven thousand, one hundred sixty-three".