298696621 has 2 divisors, whose sum is σ = 298696622. Its totient is φ = 298696620.

The previous prime is 298696543. The next prime is 298696627. The reversal of 298696621 is 126696892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295496100 + 3200521 = 17190^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 298696621 - 2⁹ = 298696109 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 (298696627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149348310 + 149348311.

It is an arithmetic number, because the mean of its divisors is an integer number (149348311).

Almost surely, 2^298696621 is an apocalyptic number.

It is an amenable number.

298696621 is a deficient number, since it is larger than the sum of its proper divisors (1).

298696621 is an equidigital number, since it uses as much as digits as its factorization.

298696621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 298696621 is about 17282.8418091470. The cubic root of 298696621 is about 668.4620706407.

The spelling of 298696621 in words is "two hundred ninety-eight million, six hundred ninety-six thousand, six hundred twenty-one".