2206680840 has 256 divisors, whose sum is σ = 9053452800. Its totient is φ = 465564672.

The previous prime is 2206680793. The next prime is 2206680841. The reversal of 2206680840 is 480866022.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2206680795 and 2206680804.

It is not an unprimeable number, because it can be changed into a prime (2206680841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87054 + ... + 109506.

It is an arithmetic number, because the mean of its divisors is an integer number (35365050).

Almost surely, 2^2206680840 is an apocalyptic number.

2206680840 is a gapful number since it is divisible by the number (20) 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 2206680840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4526726400).

2206680840 is an abundant number, since it is smaller than the sum of its proper divisors (6846771960).

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

2206680840 is a wasteful number, since it uses less digits than its factorization.

2206680840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22493 (or 22483 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 2206680840 is about 46975.3216061370. The cubic root of 2206680840 is about 1301.9066381695.

The spelling of 2206680840 in words is "two billion, two hundred six million, six hundred eighty thousand, eight hundred forty".