298702721 has 2 divisors, whose sum is σ = 298702722. Its totient is φ = 298702720.

The previous prime is 298702709. The next prime is 298702757. The reversal of 298702721 is 127207892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238857025 + 59845696 = 15455^2 + 7736^2 .

It is a cyclic number.

It is not a de Polignac number, because 298702721 - 2¹⁸ = 298440577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (298702321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149351360 + 149351361.

It is an arithmetic number, because the mean of its divisors is an integer number (149351361).

Almost surely, 2^298702721 is an apocalyptic number.

It is an amenable number.

298702721 is a deficient number, since it is larger than the sum of its proper divisors (1).

298702721 is an equidigital number, since it uses as much as digits as its factorization.

298702721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 298702721 is about 17283.0182838531. The cubic root of 298702721 is about 668.4666210670.

The spelling of 298702721 in words is "two hundred ninety-eight million, seven hundred two thousand, seven hundred twenty-one".