66630152 has 8 divisors (see below), whose sum is σ = 124931550. Its totient is φ = 33315072.

The previous prime is 66630121. The next prime is 66630181. The reversal of 66630152 is 25103666.

It can be written as a sum of positive squares in only one way, i.e., 44970436 + 21659716 = 6706^2 + 4654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4164377 + ... + 4164392.

Almost surely, 2^66630152 is an apocalyptic number.

It is an amenable number.

66630152 is a deficient number, since it is larger than the sum of its proper divisors (58301398).

66630152 is a wasteful number, since it uses less digits than its factorization.

66630152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328775 (or 8328771 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66630152 is about 8162.7294454735. The cubic root of 66630152 is about 405.4060896587.

The spelling of 66630152 in words is "sixty-six million, six hundred thirty thousand, one hundred fifty-two".