6680705 has 4 divisors (see below), whose sum is σ = 8016852. Its totient is φ = 5344560.

The previous prime is 6680699. The next prime is 6680731. The reversal of 6680705 is 5070866.

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 5125696 + 1555009 = 2264^2 + 1247^2 .

It is not a de Polignac number, because 6680705 - 2⁴ = 6680689 is a prime.

It is a Duffinian 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, 668066 + ... + 668075.

It is an arithmetic number, because the mean of its divisors is an integer number (2004213).

Almost surely, 2^6680705 is an apocalyptic number.

It is an amenable number.

6680705 is a deficient number, since it is larger than the sum of its proper divisors (1336147).

6680705 is a wasteful number, since it uses less digits than its factorization.

6680705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336146.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 6680705 is about 2584.7059794104. The cubic root of 6680705 is about 188.3392189318.

The spelling of 6680705 in words is "six million, six hundred eighty thousand, seven hundred five".