263770513 has 2 divisors, whose sum is σ = 263770514. Its totient is φ = 263770512.

The previous prime is 263770499. The next prime is 263770547. The reversal of 263770513 is 315077362.

It is an a-pointer prime, because the next prime (263770547) can be obtained adding 263770513 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229583104 + 34187409 = 15152^2 + 5847^2 .

It is a cyclic number.

It is not a de Polignac number, because 263770513 - 2²⁵ = 230216081 is a prime.

It is not a weakly prime, because it can be changed into another prime (263779513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131885256 + 131885257.

It is an arithmetic number, because the mean of its divisors is an integer number (131885257).

Almost surely, 2^263770513 is an apocalyptic number.

It is an amenable number.

263770513 is a deficient number, since it is larger than the sum of its proper divisors (1).

263770513 is an equidigital number, since it uses as much as digits as its factorization.

263770513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 263770513 is about 16241.0132996682. The cubic root of 263770513 is about 641.3209314487.

The spelling of 263770513 in words is "two hundred sixty-three million, seven hundred seventy thousand, five hundred thirteen".