6581478 has 16 divisors (see below), whose sum is σ = 13234176. Its totient is φ = 2181960.

The previous prime is 6581447. The next prime is 6581483. The reversal of 6581478 is 8741856.

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

It is a Curzon number.

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, 1726 + ... + 4017.

It is an arithmetic number, because the mean of its divisors is an integer number (827136).

Almost surely, 2^6581478 is an apocalyptic number.

6581478 is an abundant number, since it is smaller than the sum of its proper divisors (6652698).

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

6581478 is a wasteful number, since it uses less digits than its factorization.

6581478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5939.

The product of its digits is 53760, while the sum is 39.

The square root of 6581478 is about 2565.4391436945. The cubic root of 6581478 is about 187.4021106810.

The spelling of 6581478 in words is "six million, five hundred eighty-one thousand, four hundred seventy-eight".