6824550640 has 40 divisors (see below), whose sum is σ = 16236090288. Its totient is φ = 2666334720.

The previous prime is 6824550631. The next prime is 6824550641. The reversal of 6824550640 is 460554286.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 6824550593 and 6824550602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6824550641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988501 + ... + 995380.

Almost surely, 2^6824550640 is an apocalyptic number.

It is an amenable number.

6824550640 is an abundant number, since it is smaller than the sum of its proper divisors (9411539648).

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

6824550640 is a wasteful number, since it uses less digits than its factorization.

6824550640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983937 (or 1983931 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 6824550640 is about 82610.8385140836. The cubic root of 6824550640 is about 1896.8137400284.

The spelling of 6824550640 in words is "six billion, eight hundred twenty-four million, five hundred fifty thousand, six hundred forty".