6854220856 has 16 divisors (see below), whose sum is σ = 14687616240. Its totient is φ = 2937523200.

The previous prime is 6854220851. The next prime is 6854220943. The reversal of 6854220856 is 6580224586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6854220851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61198345 + ... + 61198456.

It is an arithmetic number, because the mean of its divisors is an integer number (917976015).

Almost surely, 2^6854220856 is an apocalyptic number.

It is an amenable number.

6854220856 is an abundant number, since it is smaller than the sum of its proper divisors (7833395384).

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

6854220856 is a wasteful number, since it uses less digits than its factorization.

6854220856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122396814 (or 122396810 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The square root of 6854220856 is about 82790.2219830337. The cubic root of 6854220856 is about 1899.5586099337.

It can be divided in two parts, 68542 and 20856, that added together give a palindrome (89398).

The spelling of 6854220856 in words is "six billion, eight hundred fifty-four million, two hundred twenty thousand, eight hundred fifty-six".