30666663 has 12 divisors (see below), whose sum is σ = 44432128. Its totient is φ = 20381760.

The previous prime is 30666619. The next prime is 30666667. The reversal of 30666663 is 36666603.

It is not a de Polignac number, because 30666663 - 2¹⁸ = 30404519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30666667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2023 + ... + 8088.

Almost surely, 2^30666663 is an apocalyptic number.

30666663 is a deficient number, since it is larger than the sum of its proper divisors (13765465).

30666663 is a wasteful number, since it uses less digits than its factorization.

30666663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10454 (or 10451 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The square root of 30666663 is about 5537.7489108843. The cubic root of 30666663 is about 313.0080499585.

It can be divided in two parts, 30666 and 663, that added together give a square (31329 = 177²).

The spelling of 30666663 in words is "thirty million, six hundred sixty-six thousand, six hundred sixty-three".