297894613 has 2 divisors, whose sum is σ = 297894614. Its totient is φ = 297894612.

The previous prime is 297894589. The next prime is 297894631. The reversal of 297894613 is 316498792.

Together with next prime (297894631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286218724 + 11675889 = 16918^2 + 3417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-297894613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297894013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148947306 + 148947307.

It is an arithmetic number, because the mean of its divisors is an integer number (148947307).

Almost surely, 2^297894613 is an apocalyptic number.

It is an amenable number.

297894613 is a deficient number, since it is larger than the sum of its proper divisors (1).

297894613 is an equidigital number, since it uses as much as digits as its factorization.

297894613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 297894613 is about 17259.6237792137. The cubic root of 297894613 is about 667.8632551734.

The spelling of 297894613 in words is "two hundred ninety-seven million, eight hundred ninety-four thousand, six hundred thirteen".