6855858648 has 48 divisors (see below), whose sum is σ = 18572522280. Its totient is φ = 2284723584.

The previous prime is 6855858643. The next prime is 6855858707. The reversal of 6855858648 is 8468585586.

6855858648 is a `hidden beast` number, since 6 + 8 + 5 + 5 + 8 + 586 + 48 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6855858643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367236 + ... + 385452.

Almost surely, 2^6855858648 is an apocalyptic number.

It is an amenable number.

6855858648 is an abundant number, since it is smaller than the sum of its proper divisors (11716663632).

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

6855858648 is a wasteful number, since it uses less digits than its factorization.

6855858648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23456 (or 23449 counting only the distinct ones).

The product of its digits is 73728000, while the sum is 63.

The square root of 6855858648 is about 82800.1126086191. The cubic root of 6855858648 is about 1899.7098955041.

The spelling of 6855858648 in words is "six billion, eight hundred fifty-five million, eight hundred fifty-eight thousand, six hundred forty-eight".