30406666 has 8 divisors (see below), whose sum is σ = 46722564. Its totient is φ = 14832480.

The previous prime is 30406657. The next prime is 30406679. The reversal of 30406666 is 66660403.

It can be written as a sum of positive squares in 2 ways, for example, as 29648025 + 758641 = 5445^2 + 871^2 .

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

30406666 is a modest number, since divided by 6666 gives 3040 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185325 + ... + 185488.

Almost surely, 2^30406666 is an apocalyptic number.

30406666 is a deficient number, since it is larger than the sum of its proper divisors (16315898).

30406666 is a wasteful number, since it uses less digits than its factorization.

30406666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370856.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 30406666 is about 5514.2239707868. The cubic root of 30406666 is about 312.1209603853.

The spelling of 30406666 in words is "thirty million, four hundred six thousand, six hundred sixty-six".