30665966 has 16 divisors (see below), whose sum is σ = 47268144. Its totient is φ = 14913024.

The previous prime is 30665953. The next prime is 30665993. The reversal of 30665966 is 66956603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24590 + ... + 25806.

It is an arithmetic number, because the mean of its divisors is an integer number (2954259).

Almost surely, 2^30665966 is an apocalyptic number.

30665966 is a deficient number, since it is larger than the sum of its proper divisors (16602178).

30665966 is a wasteful number, since it uses less digits than its factorization.

30665966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 30665966 is about 5537.6859788182. The cubic root of 30665966 is about 313.0056785640.

The spelling of 30665966 in words is "thirty million, six hundred sixty-five thousand, nine hundred sixty-six".