66631118 has 8 divisors (see below), whose sum is σ = 100226160. Its totient is φ = 33222400.

The previous prime is 66631099. The next prime is 66631133. The reversal of 66631118 is 81113666.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45683 + ... + 47118.

It is an arithmetic number, because the mean of its divisors is an integer number (12528270).

Almost surely, 2^66631118 is an apocalyptic number.

66631118 is a deficient number, since it is larger than the sum of its proper divisors (33595042).

66631118 is a wasteful number, since it uses less digits than its factorization.

66631118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93162.

The product of its digits is 5184, while the sum is 32.

The square root of 66631118 is about 8162.7886166432. The cubic root of 66631118 is about 405.4080488338.

The spelling of 66631118 in words is "sixty-six million, six hundred thirty-one thousand, one hundred eighteen".