298380661 has 2 divisors, whose sum is σ = 298380662. Its totient is φ = 298380660.

The previous prime is 298380653. The next prime is 298380683. The reversal of 298380661 is 166083892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194463025 + 103917636 = 13945^2 + 10194^2 .

It is a cyclic number.

It is not a de Polignac number, because 298380661 - 2³ = 298380653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298381661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149190330 + 149190331.

It is an arithmetic number, because the mean of its divisors is an integer number (149190331).

Almost surely, 2^298380661 is an apocalyptic number.

It is an amenable number.

298380661 is a deficient number, since it is larger than the sum of its proper divisors (1).

298380661 is an equidigital number, since it uses as much as digits as its factorization.

298380661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 298380661 is about 17273.6985327405. The cubic root of 298380661 is about 668.2262887178.

The spelling of 298380661 in words is "two hundred ninety-eight million, three hundred eighty thousand, six hundred sixty-one".