30804661 has 2 divisors, whose sum is σ = 30804662. Its totient is φ = 30804660.

The previous prime is 30804637. The next prime is 30804679. The reversal of 30804661 is 16640803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26780625 + 4024036 = 5175^2 + 2006^2 .

It is an emirp because it is prime and its reverse (16640803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30804661 - 2¹⁹ = 30280373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30804691) 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 as a sum of consecutive naturals, namely, 15402330 + 15402331.

It is an arithmetic number, because the mean of its divisors is an integer number (15402331).

Almost surely, 2^30804661 is an apocalyptic number.

It is an amenable number.

30804661 is a deficient number, since it is larger than the sum of its proper divisors (1).

30804661 is an equidigital number, since it uses as much as digits as its factorization.

30804661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30804661 is about 5550.1946812702. The cubic root of 30804661 is about 313.4768527925.

The spelling of 30804661 in words is "thirty million, eight hundred four thousand, six hundred sixty-one".