6509478 has 16 divisors (see below), whose sum is σ = 13135536. Its totient is φ = 2150400.

The previous prime is 6509449. The next prime is 6509491. The reversal of 6509478 is 8749056.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4123 + ... + 5478.

It is an arithmetic number, because the mean of its divisors is an integer number (820971).

Almost surely, 2^6509478 is an apocalyptic number.

6509478 is an abundant number, since it is smaller than the sum of its proper divisors (6626058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6509478 is a wasteful number, since it uses less digits than its factorization.

6509478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 6509478 is about 2551.3678684188. The cubic root of 6509478 is about 186.7162233787.

The spelling of 6509478 in words is "six million, five hundred nine thousand, four hundred seventy-eight".