263328664 has 8 divisors (see below), whose sum is σ = 493741260. Its totient is φ = 131664328.

The previous prime is 263328629. The next prime is 263328677. The reversal of 263328664 is 466823362.

263328664 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 (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16458034 + ... + 16458049.

Almost surely, 2^263328664 is an apocalyptic number.

It is an amenable number.

263328664 is a deficient number, since it is larger than the sum of its proper divisors (230412596).

263328664 is a wasteful number, since it uses less digits than its factorization.

263328664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32916089 (or 32916085 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The square root of 263328664 is about 16227.4047216430. The cubic root of 263328664 is about 640.9626333943.

The spelling of 263328664 in words is "two hundred sixty-three million, three hundred twenty-eight thousand, six hundred sixty-four".