263026361 has 6 divisors (see below), whose sum is σ = 284815710. Its totient is φ = 242793408.

The previous prime is 263026349. The next prime is 263026427. The reversal of 263026361 is 163620362.

It can be written as a sum of positive squares in 3 ways, for example, as 20757136 + 242269225 = 4556^2 + 15565^2 .

It is not a de Polignac number, because 263026361 - 2¹⁴ = 263009977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263026961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 778016 + ... + 778353.

It is an arithmetic number, because the mean of its divisors is an integer number (47469285).

Almost surely, 2^263026361 is an apocalyptic number.

It is an amenable number.

263026361 is a deficient number, since it is larger than the sum of its proper divisors (21789349).

263026361 is a wasteful number, since it uses less digits than its factorization.

263026361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556395 (or 1556382 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 263026361 is about 16218.0874643097. The cubic root of 263026361 is about 640.7172630661.

The spelling of 263026361 in words is "two hundred sixty-three million, twenty-six thousand, three hundred sixty-one".