6858247 has 4 divisors (see below), whose sum is σ = 7481736. Its totient is φ = 6234760.

The previous prime is 6858233. The next prime is 6858263. The reversal of 6858247 is 7428586.

6858247 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 a cyclic number.

It is not a de Polignac number, because 6858247 - 2⁷ = 6858119 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6858647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311728 + ... + 311749.

It is an arithmetic number, because the mean of its divisors is an integer number (1870434).

Almost surely, 2^6858247 is an apocalyptic number.

6858247 is a deficient number, since it is larger than the sum of its proper divisors (623489).

6858247 is a wasteful number, since it uses less digits than its factorization.

6858247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623488.

The product of its digits is 107520, while the sum is 40.

The square root of 6858247 is about 2618.8255001050. The cubic root of 6858247 is about 189.9930468370.

The spelling of 6858247 in words is "six million, eight hundred fifty-eight thousand, two hundred forty-seven".