30106663 has 4 divisors (see below), whose sum is σ = 30487840. Its totient is φ = 29725488.

The previous prime is 30106633. The next prime is 30106667. The reversal of 30106663 is 36660103.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30106663 - 2⁵ = 30106631 is a prime.

It is a super-2 number, since 2×30106663² = 1812822313991138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30106667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190470 + ... + 190627.

It is an arithmetic number, because the mean of its divisors is an integer number (7621960).

Almost surely, 2^30106663 is an apocalyptic number.

30106663 is a deficient number, since it is larger than the sum of its proper divisors (381177).

30106663 is an equidigital number, since it uses as much as digits as its factorization.

30106663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381176.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30106663 is about 5486.9538908214. The cubic root of 30106663 is about 311.0910669579.

Adding to 30106663 its reverse (36660103), we get a palindrome (66766766).

The spelling of 30106663 in words is "thirty million, one hundred six thousand, six hundred sixty-three".