6807665 has 4 divisors (see below), whose sum is σ = 8169204. Its totient is φ = 5446128.

The previous prime is 6807659. The next prime is 6807683. The reversal of 6807665 is 5667086.

6807665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 2380849 + 4426816 = 1543^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 6807665 - 2⁴ = 6807649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680762 + ... + 680771.

It is an arithmetic number, because the mean of its divisors is an integer number (2042301).

Almost surely, 2^6807665 is an apocalyptic number.

It is an amenable number.

6807665 is a deficient number, since it is larger than the sum of its proper divisors (1361539).

6807665 is a wasteful number, since it uses less digits than its factorization.

6807665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361538.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 6807665 is about 2609.1502448115. The cubic root of 6807665 is about 189.5248051294.

The spelling of 6807665 in words is "six million, eight hundred seven thousand, six hundred sixty-five".