66662206 has 16 divisors (see below), whose sum is σ = 108093888. Its totient is φ = 30650400.

The previous prime is 66662191. The next prime is 66662207. The reversal of 66662206 is 60226666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66662207) 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, 2316 + ... + 11776.

It is an arithmetic number, because the mean of its divisors is an integer number (6755868).

Almost surely, 2^66662206 is an apocalyptic number.

66662206 is a deficient number, since it is larger than the sum of its proper divisors (41431682).

66662206 is a wasteful number, since it uses less digits than its factorization.

66662206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 66662206 is about 8164.6926457767. The cubic root of 66662206 is about 405.4710892780.

The spelling of 66662206 in words is "sixty-six million, six hundred sixty-two thousand, two hundred six".