6908563640 has 64 divisors (see below), whose sum is σ = 16970808960. Its totient is φ = 2510216320.

The previous prime is 6908563639. The next prime is 6908563663. The reversal of 6908563640 is 463658096.

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, 622379 + ... + 633381.

It is an arithmetic number, because the mean of its divisors is an integer number (265168890).

Almost surely, 2^6908563640 is an apocalyptic number.

It is an amenable number.

6908563640 is an abundant number, since it is smaller than the sum of its proper divisors (10062245320).

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

6908563640 is a wasteful number, since it uses less digits than its factorization.

6908563640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12452 (or 12448 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 6908563640 is about 83117.7697005881. The cubic root of 6908563640 is about 1904.5655340222.

It can be divided in two parts, 690856 and 3640, that added together give a palindrome (694496).

The spelling of 6908563640 in words is "six billion, nine hundred eight million, five hundred sixty-three thousand, six hundred forty".