6672709 has 4 divisors (see below), whose sum is σ = 6835500. Its totient is φ = 6509920.

The previous prime is 6672703. The next prime is 6672749. The reversal of 6672709 is 9072766.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2712609 + 3960100 = 1647^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 6672709 - 2¹¹ = 6670661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6672703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81334 + ... + 81415.

It is an arithmetic number, because the mean of its divisors is an integer number (1708875).

Almost surely, 2^6672709 is an apocalyptic number.

It is an amenable number.

6672709 is a deficient number, since it is larger than the sum of its proper divisors (162791).

6672709 is a wasteful number, since it uses less digits than its factorization.

6672709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162790.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 6672709 is about 2583.1587252819. The cubic root of 6672709 is about 188.2640491400.

It can be divided in two parts, 6672 and 709, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 6672709 in words is "six million, six hundred seventy-two thousand, seven hundred nine".