430609661 has 6 divisors (see below), whose sum is σ = 445971162. Its totient is φ = 415760240.

The previous prime is 430609649. The next prime is 430609717. The reversal of 430609661 is 166906034.

It can be written as a sum of positive squares in 3 ways, for example, as 172396900 + 258212761 = 13130^2 + 16069^2 .

It is not a de Polignac number, because 430609661 - 2¹⁸ = 430347517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430605661) 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 in 5 ways as a sum of consecutive naturals, for example, 255170 + ... + 256851.

It is an arithmetic number, because the mean of its divisors is an integer number (74328527).

Almost surely, 2^430609661 is an apocalyptic number.

It is an amenable number.

430609661 is a deficient number, since it is larger than the sum of its proper divisors (15361501).

430609661 is an equidigital number, since it uses as much as digits as its factorization.

430609661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512079 (or 512050 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 430609661 is about 20751.1363785215. The cubic root of 430609661 is about 755.1407780994.

The spelling of 430609661 in words is "four hundred thirty million, six hundred nine thousand, six hundred sixty-one".