263366473 has 2 divisors, whose sum is σ = 263366474. Its totient is φ = 263366472.

The previous prime is 263366423. The next prime is 263366479. The reversal of 263366473 is 374663362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241864704 + 21501769 = 15552^2 + 4637^2 .

It is a cyclic number.

It is not a de Polignac number, because 263366473 - 2¹³ = 263358281 is a prime.

It is not a weakly prime, because it can be changed into another prime (263366479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131683236 + 131683237.

It is an arithmetic number, because the mean of its divisors is an integer number (131683237).

Almost surely, 2^263366473 is an apocalyptic number.

It is an amenable number.

263366473 is a deficient number, since it is larger than the sum of its proper divisors (1).

263366473 is an equidigital number, since it uses as much as digits as its factorization.

263366473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 40.

The square root of 263366473 is about 16228.5696535462. The cubic root of 263366473 is about 640.9933086173.

The spelling of 263366473 in words is "two hundred sixty-three million, three hundred sixty-six thousand, four hundred seventy-three".