3565516856 has 64 divisors (see below), whose sum is σ = 7735219200. Its totient is φ = 1524758400.

The previous prime is 3565516841. The next prime is 3565516861. The reversal of 3565516856 is 6586155653.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109025 + ... + 137903.

It is an arithmetic number, because the mean of its divisors is an integer number (120862800).

Almost surely, 2^3565516856 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 3565516856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3867609600).

3565516856 is an abundant number, since it is smaller than the sum of its proper divisors (4169702344).

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

3565516856 is a wasteful number, since it uses less digits than its factorization.

3565516856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28980 (or 28976 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 50.

The square root of 3565516856 is about 59711.9490219504. The cubic root of 3565516856 is about 1527.7096830180.

The spelling of 3565516856 in words is "three billion, five hundred sixty-five million, five hundred sixteen thousand, eight hundred fifty-six".