6856221352 has 16 divisors (see below), whose sum is σ = 12856952160. Its totient is φ = 3427700784.

The previous prime is 6856221341. The next prime is 6856221353. The reversal of 6856221352 is 2531226586.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6856221353) 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, 26853 + ... + 120139.

It is an arithmetic number, because the mean of its divisors is an integer number (803559510).

Almost surely, 2^6856221352 is an apocalyptic number.

It is an amenable number.

6856221352 is a deficient number, since it is larger than the sum of its proper divisors (6000730808).

6856221352 is a wasteful number, since it uses less digits than its factorization.

6856221352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102480 (or 102476 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 6856221352 is about 82802.3028182188. The cubic root of 6856221352 is about 1899.7433958168.

The spelling of 6856221352 in words is "six billion, eight hundred fifty-six million, two hundred twenty-one thousand, three hundred fifty-two".