66662118 has 12 divisors (see below), whose sum is σ = 144434628. Its totient is φ = 22220700.

The previous prime is 66662093. The next prime is 66662137. The reversal of 66662118 is 81126666.

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 5 ways as a sum of consecutive naturals, for example, 1851708 + ... + 1851743.

It is an arithmetic number, because the mean of its divisors is an integer number (12036219).

Almost surely, 2^66662118 is an apocalyptic number.

66662118 is an abundant number, since it is smaller than the sum of its proper divisors (77772510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66662118 is a wasteful number, since it uses less digits than its factorization.

66662118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703459 (or 3703456 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 66662118 is about 8164.6872567172. The cubic root of 66662118 is about 405.4709108587.

The spelling of 66662118 in words is "sixty-six million, six hundred sixty-two thousand, one hundred eighteen".