298904681 has 2 divisors, whose sum is σ = 298904682. Its totient is φ = 298904680.

The previous prime is 298904677. The next prime is 298904707. The reversal of 298904681 is 186409892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246992656 + 51912025 = 15716^2 + 7205^2 .

It is a cyclic number.

It is not a de Polignac number, because 298904681 - 2² = 298904677 is a prime.

It is a super-2 number, since 2×298904681² = 178688016647423522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (298904381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149452340 + 149452341.

It is an arithmetic number, because the mean of its divisors is an integer number (149452341).

Almost surely, 2^298904681 is an apocalyptic number.

It is an amenable number.

298904681 is a deficient number, since it is larger than the sum of its proper divisors (1).

298904681 is an equidigital number, since it uses as much as digits as its factorization.

298904681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 298904681 is about 17288.8600260399. The cubic root of 298904681 is about 668.6172425092.

The spelling of 298904681 in words is "two hundred ninety-eight million, nine hundred four thousand, six hundred eighty-one".