263868797 has 2 divisors, whose sum is σ = 263868798. Its totient is φ = 263868796.

The previous prime is 263868757. The next prime is 263868823. The reversal of 263868797 is 797868362.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263542756 + 326041 = 16234^2 + 571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263868797 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 (263868727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131934398 + 131934399.

It is an arithmetic number, because the mean of its divisors is an integer number (131934399).

Almost surely, 2^263868797 is an apocalyptic number.

It is an amenable number.

263868797 is a deficient number, since it is larger than the sum of its proper divisors (1).

263868797 is an equidigital number, since it uses as much as digits as its factorization.

263868797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 56.

The square root of 263868797 is about 16244.0388142851. The cubic root of 263868797 is about 641.4005761350.

The spelling of 263868797 in words is "two hundred sixty-three million, eight hundred sixty-eight thousand, seven hundred ninety-seven".