263405713 has 2 divisors, whose sum is σ = 263405714. Its totient is φ = 263405712.

The previous prime is 263405699. The next prime is 263405717. The reversal of 263405713 is 317504362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262213249 + 1192464 = 16193^2 + 1092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263405713 is a prime.

It is not a weakly prime, because it can be changed into another prime (263405717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131702856 + 131702857.

It is an arithmetic number, because the mean of its divisors is an integer number (131702857).

Almost surely, 2^263405713 is an apocalyptic number.

It is an amenable number.

263405713 is a deficient number, since it is larger than the sum of its proper divisors (1).

263405713 is an equidigital number, since it uses as much as digits as its factorization.

263405713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 263405713 is about 16229.7785875224. The cubic root of 263405713 is about 641.0251417356.

The spelling of 263405713 in words is "two hundred sixty-three million, four hundred five thousand, seven hundred thirteen".