6546478 has 4 divisors (see below), whose sum is σ = 9819720. Its totient is φ = 3273238.

The previous prime is 6546473. The next prime is 6546509. The reversal of 6546478 is 8746456.

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 6546478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6546473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1636618 + ... + 1636621.

It is an arithmetic number, because the mean of its divisors is an integer number (2454930).

Almost surely, 2^6546478 is an apocalyptic number.

6546478 is a deficient number, since it is larger than the sum of its proper divisors (3273242).

6546478 is a wasteful number, since it uses less digits than its factorization.

6546478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273241.

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

The square root of 6546478 is about 2558.6086062546. The cubic root of 6546478 is about 187.0693214352.

The spelling of 6546478 in words is "six million, five hundred forty-six thousand, four hundred seventy-eight".