6856469136 has 60 divisors (see below), whose sum is σ = 20933012880. Its totient is φ = 2077717440.

The previous prime is 6856469099. The next prime is 6856469161. The reversal of 6856469136 is 6319646586.

6856469136 is a `hidden beast` number, since 6 + 8 + 564 + 69 + 13 + 6 = 666.

It is a super-2 number, since 2×6856469136² = 94022338025841172992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2162706 + ... + 2165873.

It is an arithmetic number, because the mean of its divisors is an integer number (348883548).

Almost surely, 2^6856469136 is an apocalyptic number.

6856469136 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6856469136 is an abundant number, since it is smaller than the sum of its proper divisors (14076543744).

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

6856469136 is a wasteful number, since it uses less digits than its factorization.

6856469136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328604 (or 4328595 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 6856469136 is about 82803.7990432806. The cubic root of 6856469136 is about 1899.7662811314.

The spelling of 6856469136 in words is "six billion, eight hundred fifty-six million, four hundred sixty-nine thousand, one hundred thirty-six".