6864490 has 8 divisors (see below), whose sum is σ = 12356100. Its totient is φ = 2745792.

The previous prime is 6864479. The next prime is 6864497. The reversal of 6864490 is 944686.

It can be written as a sum of positive squares in 2 ways, for example, as 6859161 + 5329 = 2619^2 + 73^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6864497) 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, 343215 + ... + 343234.

Almost surely, 2^6864490 is an apocalyptic number.

6864490 is a deficient number, since it is larger than the sum of its proper divisors (5491610).

6864490 is a wasteful number, since it uses less digits than its factorization.

6864490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686456.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 6864490 is about 2620.0171755162. The cubic root of 6864490 is about 190.0506790019.

The spelling of 6864490 in words is "six million, eight hundred sixty-four thousand, four hundred ninety".