297646493 has 2 divisors, whose sum is σ = 297646494. Its totient is φ = 297646492.

The previous prime is 297646451. The next prime is 297646499. The reversal of 297646493 is 394646792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213685924 + 83960569 = 14618^2 + 9163^2 .

It is a cyclic number.

It is not a de Polignac number, because 297646493 - 2¹⁶ = 297580957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297646499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148823246 + 148823247.

It is an arithmetic number, because the mean of its divisors is an integer number (148823247).

Almost surely, 2^297646493 is an apocalyptic number.

It is an amenable number.

297646493 is a deficient number, since it is larger than the sum of its proper divisors (1).

297646493 is an equidigital number, since it uses as much as digits as its factorization.

297646493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 50.

The square root of 297646493 is about 17252.4344079321. The cubic root of 297646493 is about 667.6777798942.

The spelling of 297646493 in words is "two hundred ninety-seven million, six hundred forty-six thousand, four hundred ninety-three".