30687666 has 16 divisors (see below), whose sum is σ = 61444224. Its totient is φ = 10217744.

The previous prime is 30687659. The next prime is 30687743. The reversal of 30687666 is 66678603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4300 + ... + 8936.

It is an arithmetic number, because the mean of its divisors is an integer number (3840264).

Almost surely, 2^30687666 is an apocalyptic number.

30687666 is an abundant number, since it is smaller than the sum of its proper divisors (30756558).

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

30687666 is a wasteful number, since it uses less digits than its factorization.

30687666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 30687666 is about 5539.6449344701. The cubic root of 30687666 is about 313.0794913564.

The spelling of 30687666 in words is "thirty million, six hundred eighty-seven thousand, six hundred sixty-six".