263664743 has 2 divisors, whose sum is σ = 263664744. Its totient is φ = 263664742.

The previous prime is 263664733. The next prime is 263664763. The reversal of 263664743 is 347466362.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263664743 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263664743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263664733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131832371 + 131832372.

It is an arithmetic number, because the mean of its divisors is an integer number (131832372).

Almost surely, 2^263664743 is an apocalyptic number.

263664743 is a deficient number, since it is larger than the sum of its proper divisors (1).

263664743 is an equidigital number, since it uses as much as digits as its factorization.

263664743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 41.

The square root of 263664743 is about 16237.7567108268. The cubic root of 263664743 is about 641.2351983583.

The spelling of 263664743 in words is "two hundred sixty-three million, six hundred sixty-four thousand, seven hundred forty-three".