433273661 has 2 divisors, whose sum is σ = 433273662. Its totient is φ = 433273660.

The previous prime is 433273649. The next prime is 433273721. The reversal of 433273661 is 166372334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312405625 + 120868036 = 17675^2 + 10994^2 .

It is a cyclic number.

It is not a de Polignac number, because 433273661 - 2¹⁴ = 433257277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (433273361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216636830 + 216636831.

It is an arithmetic number, because the mean of its divisors is an integer number (216636831).

Almost surely, 2^433273661 is an apocalyptic number.

It is an amenable number.

433273661 is a deficient number, since it is larger than the sum of its proper divisors (1).

433273661 is an equidigital number, since it uses as much as digits as its factorization.

433273661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 35.

The square root of 433273661 is about 20815.2266622297. The cubic root of 433273661 is about 756.6948233769.

The spelling of 433273661 in words is "four hundred thirty-three million, two hundred seventy-three thousand, six hundred sixty-one".