3665567568 has 80 divisors (see below), whose sum is σ = 10214374016. Its totient is φ = 1126033920.

The previous prime is 3665567561. The next prime is 3665567573. The reversal of 3665567568 is 8657655663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665567561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408021 + ... + 416907.

Almost surely, 2^3665567568 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 3665567568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5107187008).

3665567568 is an abundant number, since it is smaller than the sum of its proper divisors (6548806448).

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

3665567568 is a wasteful number, since it uses less digits than its factorization.

3665567568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9572 (or 9566 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 57.

The square root of 3665567568 is about 60543.9308931952. The cubic root of 3665567568 is about 1541.8675785154.

The spelling of 3665567568 in words is "three billion, six hundred sixty-five million, five hundred sixty-seven thousand, five hundred sixty-eight".