30678666 has 8 divisors (see below), whose sum is σ = 61357344. Its totient is φ = 10226220.

The previous prime is 30678629. The next prime is 30678667. The reversal of 30678666 is 66687603.

It is a sphenic number, since it is the product of 3 distinct primes.

30678666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30678667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556550 + ... + 2556561.

It is an arithmetic number, because the mean of its divisors is an integer number (7669668).

Almost surely, 2^30678666 is an apocalyptic number.

30678666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30678666 is a wasteful number, since it uses less digits than its factorization.

30678666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113116.

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

The square root of 30678666 is about 5538.8325484708. The cubic root of 30678666 is about 313.0488819803.

The spelling of 30678666 in words is "thirty million, six hundred seventy-eight thousand, six hundred sixty-six".