297768961 has 4 divisors (see below), whose sum is σ = 340307392. Its totient is φ = 255230532.

The previous prime is 297768949. The next prime is 297768967. The reversal of 297768961 is 169867792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 297768961 - 2²¹ = 295671809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (297768967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21269205 + ... + 21269218.

It is an arithmetic number, because the mean of its divisors is an integer number (85076848).

Almost surely, 2^297768961 is an apocalyptic number.

It is an amenable number.

297768961 is a deficient number, since it is larger than the sum of its proper divisors (42538431).

297768961 is an equidigital number, since it uses as much as digits as its factorization.

297768961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42538430.

The product of its digits is 2286144, while the sum is 55.

The square root of 297768961 is about 17255.9833391204. The cubic root of 297768961 is about 667.7693403550.

The spelling of 297768961 in words is "two hundred ninety-seven million, seven hundred sixty-eight thousand, nine hundred sixty-one".