66002188 has 24 divisors (see below), whose sum is σ = 132565664. Its totient is φ = 28166400.

The previous prime is 66002171. The next prime is 66002197. The reversal of 66002188 is 88120066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858 + ... + 11638.

Almost surely, 2^66002188 is an apocalyptic number.

It is an amenable number.

66002188 is an abundant number, since it is smaller than the sum of its proper divisors (66563476).

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

66002188 is a wasteful number, since it uses less digits than its factorization.

66002188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10033 (or 10031 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 66002188 is about 8124.1730656110. The cubic root of 66002188 is about 404.1284677872.

The spelling of 66002188 in words is "sixty-six million, two thousand, one hundred eighty-eight".