3263573664 has 72 divisors (see below), whose sum is σ = 9994705812. Its totient is φ = 1004175360.

The previous prime is 3263573659. The next prime is 3263573669. The reversal of 3263573664 is 4663753623.

3263573664 is a `hidden beast` number, since 3 + 2 + 635 + 7 + 3 + 6 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (3263573659) and next prime (3263573669).

It can be written as a sum of positive squares in 2 ways, for example, as 3261323664 + 2250000 = 57108^2 + 1500^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (3263573669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432097 + ... + 439584.

Almost surely, 2^3263573664 is an apocalyptic number.

It is an amenable number.

3263573664 is an abundant number, since it is smaller than the sum of its proper divisors (6731132148).

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

3263573664 is a wasteful number, since it uses less digits than its factorization.

3263573664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871710 (or 871699 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 45.

The square root of 3263573664 is about 57127.6961201832. The cubic root of 3263573664 is about 1483.3073200449.

The spelling of 3263573664 in words is "three billion, two hundred sixty-three million, five hundred seventy-three thousand, six hundred sixty-four".