30006623 has 2 divisors, whose sum is σ = 30006624. Its totient is φ = 30006622.

The previous prime is 30006607. The next prime is 30006637. The reversal of 30006623 is 32660003.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30006623 - 2⁴ = 30006607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30006595 and 30006604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30006653) 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 as a sum of consecutive naturals, namely, 15003311 + 15003312.

It is an arithmetic number, because the mean of its divisors is an integer number (15003312).

Almost surely, 2^30006623 is an apocalyptic number.

30006623 is a deficient number, since it is larger than the sum of its proper divisors (1).

30006623 is an equidigital number, since it uses as much as digits as its factorization.

30006623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 30006623 is about 5477.8301361032. The cubic root of 30006623 is about 310.7461146917.

Adding to 30006623 its reverse (32660003), we get a palindrome (62666626).

The spelling of 30006623 in words is "thirty million, six thousand, six hundred twenty-three".