30666885 has 16 divisors (see below), whose sum is σ = 49135680. Its totient is φ = 16332800.

The previous prime is 30666871. The next prime is 30666899. The reversal of 30666885 is 58866603.

It is an interprime number because it is at equal distance from previous prime (30666871) and next prime (30666899).

It is not a de Polignac number, because 30666885 - 2¹⁰ = 30665861 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20410 + ... + 21860.

It is an arithmetic number, because the mean of its divisors is an integer number (3070980).

Almost surely, 2^30666885 is an apocalyptic number.

It is an amenable number.

30666885 is a deficient number, since it is larger than the sum of its proper divisors (18468795).

30666885 is a wasteful number, since it uses less digits than its factorization.

30666885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 30666885 is about 5537.7689550937. The cubic root of 30666885 is about 313.0088052588.

The spelling of 30666885 in words is "thirty million, six hundred sixty-six thousand, eight hundred eighty-five".