2006520656 has 80 divisors (see below), whose sum is σ = 4577576064. Its totient is φ = 834043392.

The previous prime is 2006520629. The next prime is 2006520661. The reversal of 2006520656 is 6560256002.

It is a super-2 number, since 2×2006520656² = 8052250285909340672, which contains 22 as substring.

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, 1835246 + ... + 1836338.

Almost surely, 2^2006520656 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 2006520656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2288788032).

2006520656 is an abundant number, since it is smaller than the sum of its proper divisors (2571055408).

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

2006520656 is a wasteful number, since it uses less digits than its factorization.

2006520656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2006520656 is about 44794.2033749904. The cubic root of 2006520656 is about 1261.2888164731.

Adding to 2006520656 its reverse (6560256002), we get a palindrome (8566776658).

The spelling of 2006520656 in words is "two billion, six million, five hundred twenty thousand, six hundred fifty-six".