6404579 has 4 divisors (see below), whose sum is σ = 6423384. Its totient is φ = 6385776.

The previous prime is 6404551. The next prime is 6404581. The reversal of 6404579 is 9754046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6404579 - 2¹⁶ = 6339043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6404599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8882 + ... + 9575.

It is an arithmetic number, because the mean of its divisors is an integer number (1605846).

Almost surely, 2^6404579 is an apocalyptic number.

6404579 is a deficient number, since it is larger than the sum of its proper divisors (18805).

6404579 is a wasteful number, since it uses less digits than its factorization.

6404579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18804.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 6404579 is about 2530.7269706549. The cubic root of 6404579 is about 185.7078216121.

The spelling of 6404579 in words is "six million, four hundred four thousand, five hundred seventy-nine".