6858655 has 4 divisors (see below), whose sum is σ = 8230392. Its totient is φ = 5486920.

The previous prime is 6858647. The next prime is 6858661. The reversal of 6858655 is 5568586.

6858655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6858655 - 2³ = 6858647 is a prime.

It is a super-2 number, since 2×6858655² = 94082296818050, which contains 22 as substring.

It is a Duffinian number.

6858655 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685861 + ... + 685870.

It is an arithmetic number, because the mean of its divisors is an integer number (2057598).

Almost surely, 2^6858655 is an apocalyptic number.

6858655 is a deficient number, since it is larger than the sum of its proper divisors (1371737).

6858655 is a wasteful number, since it uses less digits than its factorization.

6858655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371736.

The product of its digits is 288000, while the sum is 43.

The square root of 6858655 is about 2618.9033964620. The cubic root of 6858655 is about 189.9968143510.

The spelling of 6858655 in words is "six million, eight hundred fifty-eight thousand, six hundred fifty-five".