6864478 has 8 divisors (see below), whose sum is σ = 10393272. Its totient is φ = 3400056.

The previous prime is 6864461. The next prime is 6864479. The reversal of 6864478 is 8744686.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6864479) 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, 15825 + ... + 16252.

It is an arithmetic number, because the mean of its divisors is an integer number (1299159).

Almost surely, 2^6864478 is an apocalyptic number.

6864478 is a deficient number, since it is larger than the sum of its proper divisors (3528794).

6864478 is a wasteful number, since it uses less digits than its factorization.

6864478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32186.

The product of its digits is 258048, while the sum is 43.

The square root of 6864478 is about 2620.0148854539. The cubic root of 6864478 is about 190.0505682576.

It can be divided in two parts, 68 and 64478, that added together give a palindrome (64546).

The spelling of 6864478 in words is "six million, eight hundred sixty-four thousand, four hundred seventy-eight".