30668999 has 2 divisors, whose sum is σ = 30669000. Its totient is φ = 30668998.

The previous prime is 30668987. The next prime is 30669017. The reversal of 30668999 is 99986603.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30668999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30668929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15334499 + 15334500.

It is an arithmetic number, because the mean of its divisors is an integer number (15334500).

Almost surely, 2^30668999 is an apocalyptic number.

30668999 is a deficient number, since it is larger than the sum of its proper divisors (1).

30668999 is an equidigital number, since it uses as much as digits as its factorization.

30668999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 30668999 is about 5537.9598228951. The cubic root of 30668999 is about 313.0159974403.

The spelling of 30668999 in words is "thirty million, six hundred sixty-eight thousand, nine hundred ninety-nine".