263320463 has 24 divisors (see below), whose sum is σ = 325767312. Its totient is φ = 211486464.

The previous prime is 263320457. The next prime is 263320489. The reversal of 263320463 is 364023362.

It is not a de Polignac number, because 263320463 - 2⁸ = 263320207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263320663) 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 23 ways as a sum of consecutive naturals, for example, 235181 + ... + 236297.

It is an arithmetic number, because the mean of its divisors is an integer number (13573638).

Almost surely, 2^263320463 is an apocalyptic number.

263320463 is a deficient number, since it is larger than the sum of its proper divisors (62446849).

263320463 is a wasteful number, since it uses less digits than its factorization.

263320463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

The square root of 263320463 is about 16227.1520298542. The cubic root of 263320463 is about 640.9559793660.

The spelling of 263320463 in words is "two hundred sixty-three million, three hundred twenty thousand, four hundred sixty-three".