6855651 has 32 divisors (see below), whose sum is σ = 11370240. Its totient is φ = 4046400.

The previous prime is 6855647. The next prime is 6855659. The reversal of 6855651 is 1565586.

It is not a de Polignac number, because 6855651 - 2² = 6855647 is a prime.

6855651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6855659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11896 + ... + 12458.

It is an arithmetic number, because the mean of its divisors is an integer number (355320).

Almost surely, 2^6855651 is an apocalyptic number.

6855651 is a deficient number, since it is larger than the sum of its proper divisors (4514589).

6855651 is a wasteful number, since it uses less digits than its factorization.

6855651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 618 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 6855651 is about 2618.3298111583. The cubic root of 6855651 is about 189.9690716047.

It can be divided in two parts, 685 and 5651, that added together give a palindrome (6336).

The spelling of 6855651 in words is "six million, eight hundred fifty-five thousand, six hundred fifty-one".