6680071 has 4 divisors (see below), whose sum is σ = 6685672. Its totient is φ = 6674472.

The previous prime is 6680059. The next prime is 6680081. The reversal of 6680071 is 1700866.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1700866 = 2 ⋅850433.

It is a cyclic number.

It is not a de Polignac number, because 6680071 - 2¹³ = 6671879 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 (6680021) 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, 216 + ... + 3661.

It is an arithmetic number, because the mean of its divisors is an integer number (1671418).

Almost surely, 2^6680071 is an apocalyptic number.

6680071 is a deficient number, since it is larger than the sum of its proper divisors (5601).

6680071 is a wasteful number, since it uses less digits than its factorization.

6680071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 6680071 is about 2584.5833319899. The cubic root of 6680071 is about 188.3332609357. Note that the first 3 decimals are identical.

The spelling of 6680071 in words is "six million, six hundred eighty thousand, seventy-one".