6670009 has 4 divisors (see below), whose sum is σ = 6783120. Its totient is φ = 6556900.

The previous prime is 6669983. The next prime is 6670019. The reversal of 6670009 is 9000766.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9000766 = 2 ⋅4500383.

It is a cyclic number.

It is not a de Polignac number, because 6670009 - 2⁷ = 6669881 is a prime.

It is a Duffinian number.

6670009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6670019) 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, 56467 + ... + 56584.

It is an arithmetic number, because the mean of its divisors is an integer number (1695780).

Almost surely, 2^6670009 is an apocalyptic number.

It is an amenable number.

6670009 is a deficient number, since it is larger than the sum of its proper divisors (113111).

6670009 is a wasteful number, since it uses less digits than its factorization.

6670009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113110.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 6670009 is about 2582.6360564354. The cubic root of 6670009 is about 188.2386530823.

The spelling of 6670009 in words is "six million, six hundred seventy thousand, nine".