263505696 has 48 divisors (see below), whose sum is σ = 697181184. Its totient is φ = 87139584.

The previous prime is 263505689. The next prime is 263505709. The reversal of 263505696 is 696505362.

263505696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386 + ... + 22998.

It is an arithmetic number, because the mean of its divisors is an integer number (14524608).

Almost surely, 2^263505696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263505696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348590592).

263505696 is an abundant number, since it is smaller than the sum of its proper divisors (433675488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263505696 is a wasteful number, since it uses less digits than its factorization.

263505696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21753 (or 21745 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The square root of 263505696 is about 16232.8585283061. The cubic root of 263505696 is about 641.1062378117.

The spelling of 263505696 in words is "two hundred sixty-three million, five hundred five thousand, six hundred ninety-six".