296916661 has 2 divisors, whose sum is σ = 296916662. Its totient is φ = 296916660.

The previous prime is 296916617. The next prime is 296916689. The reversal of 296916661 is 166619692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253764900 + 43151761 = 15930^2 + 6569^2 .

It is a cyclic number.

It is not a de Polignac number, because 296916661 - 2¹⁹ = 296392373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (296916461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148458330 + 148458331.

It is an arithmetic number, because the mean of its divisors is an integer number (148458331).

Almost surely, 2^296916661 is an apocalyptic number.

It is an amenable number.

296916661 is a deficient number, since it is larger than the sum of its proper divisors (1).

296916661 is an equidigital number, since it uses as much as digits as its factorization.

296916661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 296916661 is about 17231.2698603440. The cubic root of 296916661 is about 667.1316158524.

The spelling of 296916661 in words is "two hundred ninety-six million, nine hundred sixteen thousand, six hundred sixty-one".