6854220857 has 8 divisors (see below), whose sum is σ = 7477954560. Its totient is φ = 6230590960.

The previous prime is 6854220851. The next prime is 6854220943. The reversal of 6854220857 is 7580224586.

6854220857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6854220857 - 2²² = 6850026553 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 191048 + ... + 224070.

It is an arithmetic number, because the mean of its divisors is an integer number (934744320).

Almost surely, 2^6854220857 is an apocalyptic number.

It is an amenable number.

6854220857 is a deficient number, since it is larger than the sum of its proper divisors (623733703).

6854220857 is a wasteful number, since it uses less digits than its factorization.

6854220857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51903.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The square root of 6854220857 is about 82790.2219890731. The cubic root of 6854220857 is about 1899.5586100261.

The spelling of 6854220857 in words is "six billion, eight hundred fifty-four million, two hundred twenty thousand, eight hundred fifty-seven".