6579409 has 4 divisors (see below), whose sum is σ = 6791680. Its totient is φ = 6367140.

The previous prime is 6579407. The next prime is 6579421. The reversal of 6579409 is 9049756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6579409 - 2¹ = 6579407 is a prime.

It is a Duffinian number.

6579409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6579401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106089 + ... + 106150.

It is an arithmetic number, because the mean of its divisors is an integer number (1697920).

Almost surely, 2^6579409 is an apocalyptic number.

It is an amenable number.

6579409 is a deficient number, since it is larger than the sum of its proper divisors (212271).

6579409 is a wasteful number, since it uses less digits than its factorization.

6579409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212270.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 6579409 is about 2565.0358671956. The cubic root of 6579409 is about 187.3824709382.

The spelling of 6579409 in words is "six million, five hundred seventy-nine thousand, four hundred nine".