263025664 has 88 divisors (see below), whose sum is σ = 604274400. Its totient is φ = 113172480.

The previous prime is 263025629. The next prime is 263025667. The reversal of 263025664 is 466520362.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263025667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213402 + ... + 214630.

Almost surely, 2^263025664 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 263025664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302137200).

263025664 is an abundant number, since it is smaller than the sum of its proper divisors (341248736).

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

263025664 is a wasteful number, since it uses less digits than its factorization.

263025664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 263025664 is about 16218.0659759418. The cubic root of 263025664 is about 640.7166971149.

The spelling of 263025664 in words is "two hundred sixty-three million, twenty-five thousand, six hundred sixty-four".