6654478 has 4 divisors (see below), whose sum is σ = 9981720. Its totient is φ = 3327238.

The previous prime is 6654451. The next prime is 6654481. The reversal of 6654478 is 8744566.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6654478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1663618 + ... + 1663621.

It is an arithmetic number, because the mean of its divisors is an integer number (2495430).

Almost surely, 2^6654478 is an apocalyptic number.

6654478 is a deficient number, since it is larger than the sum of its proper divisors (3327242).

6654478 is a wasteful number, since it uses less digits than its factorization.

6654478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327241.

The product of its digits is 161280, while the sum is 40.

The square root of 6654478 is about 2579.6274924880. The cubic root of 6654478 is about 188.0924360585.

The spelling of 6654478 in words is "six million, six hundred fifty-four thousand, four hundred seventy-eight".