30306666 has 32 divisors (see below), whose sum is σ = 65939328. Its totient is φ = 9230400.

The previous prime is 30306649. The next prime is 30306697. The reversal of 30306666 is 66660303.

30306666 is a modest number, since divided by 6666 gives 3030 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5955 + ... + 9801.

It is an arithmetic number, because the mean of its divisors is an integer number (2060604).

Almost surely, 2^30306666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30306666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32969664).

30306666 is an abundant number, since it is smaller than the sum of its proper divisors (35632662).

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

30306666 is a wasteful number, since it uses less digits than its factorization.

30306666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 30306666 is about 5505.1490443039. The cubic root of 30306666 is about 311.7784217351.

Adding to 30306666 its reverse (66660303), we get a palindrome (96966969).

The spelling of 30306666 in words is "thirty million, three hundred six thousand, six hundred sixty-six".