298681997 has 2 divisors, whose sum is σ = 298681998. Its totient is φ = 298681996.

The previous prime is 298681969. The next prime is 298682009. The reversal of 298681997 is 799186892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214886281 + 83795716 = 14659^2 + 9154^2 .

It is a cyclic number.

It is not a de Polignac number, because 298681997 - 2²⁰ = 297633421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298681927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149340998 + 149340999.

It is an arithmetic number, because the mean of its divisors is an integer number (149340999).

Almost surely, 2^298681997 is an apocalyptic number.

It is an amenable number.

298681997 is a deficient number, since it is larger than the sum of its proper divisors (1).

298681997 is an equidigital number, since it uses as much as digits as its factorization.

298681997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 59.

The square root of 298681997 is about 17282.4187253984. The cubic root of 298681997 is about 668.4511613009.

The spelling of 298681997 in words is "two hundred ninety-eight million, six hundred eighty-one thousand, nine hundred ninety-seven".