6208406856 has 72 divisors (see below), whose sum is σ = 17138232930. Its totient is φ = 2030356224.

The previous prime is 6208406839. The next prime is 6208406857. The reversal of 6208406856 is 6586048026.

It can be written as a sum of positive squares in 3 ways, for example, as 5236837956 + 971568900 = 72366^2 + 31170^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (6208406857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 186900 + ... + 217596.

Almost surely, 2^6208406856 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 6208406856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8569116465).

6208406856 is an abundant number, since it is smaller than the sum of its proper divisors (10929826074).

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

6208406856 is a wasteful number, since it uses less digits than its factorization.

6208406856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30815 (or 30755 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 6208406856 is about 78793.4442450639. Note that the first 3 decimals coincide. The cubic root of 6208406856 is about 1837.9205059548.

The spelling of 6208406856 in words is "six billion, two hundred eight million, four hundred six thousand, eight hundred fifty-six".