263704427 has 6 divisors (see below), whose sum is σ = 306758268. Its totient is φ = 226032324.

The previous prime is 263704421. The next prime is 263704433. The reversal of 263704427 is 724407362.

It is an interprime number because it is at equal distance from previous prime (263704421) and next prime (263704433).

It is not a de Polignac number, because 263704427 - 2²² = 259510123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263704421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2690813 + ... + 2690910.

It is an arithmetic number, because the mean of its divisors is an integer number (51126378).

Almost surely, 2^263704427 is an apocalyptic number.

263704427 is a deficient number, since it is larger than the sum of its proper divisors (43053841).

263704427 is an equidigital number, since it uses as much as digits as its factorization.

263704427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381737 (or 5381730 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 263704427 is about 16238.9786316751. The cubic root of 263704427 is about 641.2673673680.

The spelling of 263704427 in words is "two hundred sixty-three million, seven hundred four thousand, four hundred twenty-seven".