263068513 has 2 divisors, whose sum is σ = 263068514. Its totient is φ = 263068512.

The previous prime is 263068451. The next prime is 263068517. The reversal of 263068513 is 315860362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154554624 + 108513889 = 12432^2 + 10417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263068513 is a prime.

It is not a weakly prime, because it can be changed into another prime (263068517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131534256 + 131534257.

It is an arithmetic number, because the mean of its divisors is an integer number (131534257).

Almost surely, 2^263068513 is an apocalyptic number.

It is an amenable number.

263068513 is a deficient number, since it is larger than the sum of its proper divisors (1).

263068513 is an equidigital number, since it uses as much as digits as its factorization.

263068513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 263068513 is about 16219.3869489571. The cubic root of 263068513 is about 640.7514878632.

The spelling of 263068513 in words is "two hundred sixty-three million, sixty-eight thousand, five hundred thirteen".