6858490 has 8 divisors (see below), whose sum is σ = 12345300. Its totient is φ = 2743392.

The previous prime is 6858479. The next prime is 6858491. The reversal of 6858490 is 948586.

It can be written as a sum of positive squares in 2 ways, for example, as 6848689 + 9801 = 2617^2 + 99^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (6858491) 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 3 ways as a sum of consecutive naturals, for example, 342915 + ... + 342934.

Almost surely, 2^6858490 is an apocalyptic number.

6858490 is a deficient number, since it is larger than the sum of its proper divisors (5486810).

6858490 is a wasteful number, since it uses less digits than its factorization.

6858490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685856.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 6858490 is about 2618.8718945378. The cubic root of 6858490 is about 189.9952907420.

The spelling of 6858490 in words is "six million, eight hundred fifty-eight thousand, four hundred ninety".