263662241 has 2 divisors, whose sum is σ = 263662242. Its totient is φ = 263662240.

The previous prime is 263662213. The next prime is 263662249. The reversal of 263662241 is 142266362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140541025 + 123121216 = 11855^2 + 11096^2 .

It is a cyclic number.

It is not a de Polignac number, because 263662241 - 2²² = 259467937 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 263662198 and 263662207.

It is not a weakly prime, because it can be changed into another prime (263662249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131831120 + 131831121.

It is an arithmetic number, because the mean of its divisors is an integer number (131831121).

Almost surely, 2^263662241 is an apocalyptic number.

It is an amenable number.

263662241 is a deficient number, since it is larger than the sum of its proper divisors (1).

263662241 is an equidigital number, since it uses as much as digits as its factorization.

263662241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 263662241 is about 16237.6796679821. The cubic root of 263662241 is about 641.2331700558.

The spelling of 263662241 in words is "two hundred sixty-three million, six hundred sixty-two thousand, two hundred forty-one".