6872709 has 12 divisors (see below), whose sum is σ = 9735584. Its totient is φ = 4311744.

The previous prime is 6872693. The next prime is 6872759. The reversal of 6872709 is 9072786.

6872709 = T₅₇ + T₅₈ + ... + T₃₄₅.

It is not a de Polignac number, because 6872709 - 2⁴ = 6872693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6872759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3097 + ... + 4830.

Almost surely, 2^6872709 is an apocalyptic number.

It is an amenable number.

6872709 is a deficient number, since it is larger than the sum of its proper divisors (2862875).

6872709 is a wasteful number, since it uses less digits than its factorization.

6872709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7964 (or 7947 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 6872709 is about 2621.5852074651. The cubic root of 6872709 is about 190.1264993240.

The spelling of 6872709 in words is "six million, eight hundred seventy-two thousand, seven hundred nine".