30663361 has 4 divisors (see below), whose sum is σ = 30709332. Its totient is φ = 30617392.

The previous prime is 30663337. The next prime is 30663463. The reversal of 30663361 is 16336603.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26884225 + 3779136 = 5185^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 30663361 - 2⁷ = 30663233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30663161) 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, 21970 + ... + 23323.

It is an arithmetic number, because the mean of its divisors is an integer number (7677333).

Almost surely, 2^30663361 is an apocalyptic number.

It is an amenable number.

30663361 is a deficient number, since it is larger than the sum of its proper divisors (45971).

30663361 is an equidigital number, since it uses as much as digits as its factorization.

30663361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45970.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 30663361 is about 5537.4507672755. The cubic root of 30663361 is about 312.9968152867.

Adding to 30663361 its reverse (16336603), we get a palindrome (46999964).

The spelling of 30663361 in words is "thirty million, six hundred sixty-three thousand, three hundred sixty-one".