6578409 has 16 divisors (see below), whose sum is σ = 9112320. Its totient is φ = 4218240.

The previous prime is 6578399. The next prime is 6578431. The reversal of 6578409 is 9048756.

It is not a de Polignac number, because 6578409 - 2⁴ = 6578393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6578309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9379 + ... + 10055.

It is an arithmetic number, because the mean of its divisors is an integer number (569520).

Almost surely, 2^6578409 is an apocalyptic number.

It is an amenable number.

6578409 is a deficient number, since it is larger than the sum of its proper divisors (2533911).

6578409 is a wasteful number, since it uses less digits than its factorization.

6578409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

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

The square root of 6578409 is about 2564.8409307402. The cubic root of 6578409 is about 187.3729770782.

The spelling of 6578409 in words is "six million, five hundred seventy-eight thousand, four hundred nine".