6855771 has 16 divisors (see below), whose sum is σ = 10273536. Its totient is φ = 4034976.

The previous prime is 6855769. The next prime is 6855787. The reversal of 6855771 is 1775586.

It is not a de Polignac number, because 6855771 - 2¹ = 6855769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

6855771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6855071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2925 + ... + 4718.

It is an arithmetic number, because the mean of its divisors is an integer number (642096).

Almost surely, 2^6855771 is an apocalyptic number.

6855771 is a deficient number, since it is larger than the sum of its proper divisors (3417765).

6855771 is a wasteful number, since it uses less digits than its factorization.

6855771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7682.

The product of its digits is 58800, while the sum is 39.

The square root of 6855771 is about 2618.3527264293. The cubic root of 6855771 is about 189.9701799923.

It can be divided in two parts, 6855 and 771, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 6855771 in words is "six million, eight hundred fifty-five thousand, seven hundred seventy-one".