263302997 has 2 divisors, whose sum is σ = 263302998. Its totient is φ = 263302996.

The previous prime is 263302979. The next prime is 263303081. The reversal of 263302997 is 799203362.

Together with previous prime (263302979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168844036 + 94458961 = 12994^2 + 9719^2 .

It is a cyclic number.

It is not a de Polignac number, because 263302997 - 2¹² = 263298901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263302927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131651498 + 131651499.

It is an arithmetic number, because the mean of its divisors is an integer number (131651499).

Almost surely, 2^263302997 is an apocalyptic number.

It is an amenable number.

263302997 is a deficient number, since it is larger than the sum of its proper divisors (1).

263302997 is an equidigital number, since it uses as much as digits as its factorization.

263302997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 263302997 is about 16226.6138488595. The cubic root of 263302997 is about 640.9418075535.

The spelling of 263302997 in words is "two hundred sixty-three million, three hundred two thousand, nine hundred ninety-seven".