297220823 has 2 divisors, whose sum is σ = 297220824. Its totient is φ = 297220822.

The previous prime is 297220813. The next prime is 297220829. The reversal of 297220823 is 328022792.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 297220823 - 2¹⁰ = 297219799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297220829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148610411 + 148610412.

It is an arithmetic number, because the mean of its divisors is an integer number (148610412).

Almost surely, 2^297220823 is an apocalyptic number.

297220823 is a deficient number, since it is larger than the sum of its proper divisors (1).

297220823 is an equidigital number, since it uses as much as digits as its factorization.

297220823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 297220823 is about 17240.0934742246. The cubic root of 297220823 is about 667.3593417470.

The spelling of 297220823 in words is "two hundred ninety-seven million, two hundred twenty thousand, eight hundred twenty-three".