30668643 has 12 divisors (see below), whose sum is σ = 44445648. Its totient is φ = 20378160.

The previous prime is 30668633. The next prime is 30668681. The reversal of 30668643 is 34686603.

30668643 is a `hidden beast` number, since 3 + 0 + 6 + 6 + 8 + 643 = 666.

It is not a de Polignac number, because 30668643 - 2⁵ = 30668611 is a prime.

It is a super-2 number, since 2×30668643² = 1881131326922898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30668598 and 30668607.

It is not an unprimeable number, because it can be changed into a prime (30668633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2680 + ... + 8277.

It is an arithmetic number, because the mean of its divisors is an integer number (3703804).

Almost surely, 2^30668643 is an apocalyptic number.

30668643 is a deficient number, since it is larger than the sum of its proper divisors (13777005).

30668643 is a wasteful number, since it uses less digits than its factorization.

30668643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274 (or 11271 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 30668643 is about 5537.9276810013. The cubic root of 30668643 is about 313.0147862919.

The spelling of 30668643 in words is "thirty million, six hundred sixty-eight thousand, six hundred forty-three".