66498166 has 16 divisors (see below), whose sum is σ = 114475680. Its totient is φ = 28379520.

The previous prime is 66498163. The next prime is 66498191. The reversal of 66498166 is 66189466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66498161) 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, 6481 + ... + 13228.

It is an arithmetic number, because the mean of its divisors is an integer number (7154730).

Almost surely, 2^66498166 is an apocalyptic number.

66498166 is a deficient number, since it is larger than the sum of its proper divisors (47977514).

66498166 is a wasteful number, since it uses less digits than its factorization.

66498166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19959.

The product of its digits is 373248, while the sum is 46.

The square root of 66498166 is about 8154.6407646199. The cubic root of 66498166 is about 405.1382264551.

The spelling of 66498166 in words is "sixty-six million, four hundred ninety-eight thousand, one hundred sixty-six".