6822923640 has 128 divisors (see below), whose sum is σ = 22126003200. Its totient is φ = 1673187840.

The previous prime is 6822923603. The next prime is 6822923647. The reversal of 6822923640 is 463292286.

It is a junction number, because it is equal to n+sod(n) for n = 6822923592 and 6822923601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6822923647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414691 + ... + 430829.

It is an arithmetic number, because the mean of its divisors is an integer number (172859400).

Almost surely, 2^6822923640 is an apocalyptic number.

6822923640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6822923640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11063001600).

6822923640 is an abundant number, since it is smaller than the sum of its proper divisors (15303079560).

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

6822923640 is a wasteful number, since it uses less digits than its factorization.

6822923640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16437 (or 16433 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 6822923640 is about 82600.9905509613. The cubic root of 6822923640 is about 1896.6629920697.

The spelling of 6822923640 in words is "six billion, eight hundred twenty-two million, nine hundred twenty-three thousand, six hundred forty".