66630204 has 18 divisors (see below), whose sum is σ = 168426440. Its totient is φ = 22210056.

The previous prime is 66630181. The next prime is 66630211. The reversal of 66630204 is 40203666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 925384 + ... + 925455.

Almost surely, 2^66630204 is an apocalyptic number.

It is an amenable number.

66630204 is an abundant number, since it is smaller than the sum of its proper divisors (101796236).

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

66630204 is a wasteful number, since it uses less digits than its factorization.

66630204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850849 (or 1850844 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 66630204 is about 8162.7326306820. The cubic root of 66630204 is about 405.4061951221.

The spelling of 66630204 in words is "sixty-six million, six hundred thirty thousand, two hundred four".