6855418 has 4 divisors (see below), whose sum is σ = 10283130. Its totient is φ = 3427708.

The previous prime is 6855413. The next prime is 6855419. The reversal of 6855418 is 8145586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8145586 = 2 ⋅4072793.

It can be written as a sum of positive squares in only one way, i.e., 6723649 + 131769 = 2593^2 + 363^2 .

It is not an unprimeable number, because it can be changed into a prime (6855413) 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 as a sum of consecutive naturals, namely, 1713853 + ... + 1713856.

Almost surely, 2^6855418 is an apocalyptic number.

6855418 is a deficient number, since it is larger than the sum of its proper divisors (3427712).

6855418 is a wasteful number, since it uses less digits than its factorization.

6855418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427711.

The product of its digits is 38400, while the sum is 37.

The square root of 6855418 is about 2618.2853167674. The cubic root of 6855418 is about 189.9669194485.

The spelling of 6855418 in words is "six million, eight hundred fifty-five thousand, four hundred eighteen".