6856473434 has 8 divisors (see below), whose sum is σ = 10379065620. Its totient is φ = 3396784896.

The previous prime is 6856473427. The next prime is 6856473517. The reversal of 6856473434 is 4343746586.

It can be written as a sum of positive squares in 2 ways, for example, as 6839786209 + 16687225 = 82703^2 + 4085^2 .

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

It is a super-2 number, since 2×6856473434² = 94022455902295504712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15725639 + ... + 15726074.

Almost surely, 2^6856473434 is an apocalyptic number.

6856473434 is a deficient number, since it is larger than the sum of its proper divisors (3522592186).

6856473434 is a wasteful number, since it uses less digits than its factorization.

6856473434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31451824.

The product of its digits is 5806080, while the sum is 50.

The square root of 6856473434 is about 82803.8249961921. The cubic root of 6856473434 is about 1899.7666780895.

The spelling of 6856473434 in words is "six billion, eight hundred fifty-six million, four hundred seventy-three thousand, four hundred thirty-four".