6711645 has 8 divisors (see below), whose sum is σ = 10738656. Its totient is φ = 3579536.

The previous prime is 6711643. The next prime is 6711667. The reversal of 6711645 is 5461176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6711645 - 2¹ = 6711643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6711641) 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 7 ways as a sum of consecutive naturals, for example, 223707 + ... + 223736.

It is an arithmetic number, because the mean of its divisors is an integer number (1342332).

Almost surely, 2^6711645 is an apocalyptic number.

It is an amenable number.

6711645 is a deficient number, since it is larger than the sum of its proper divisors (4027011).

6711645 is a wasteful number, since it uses less digits than its factorization.

6711645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447451.

The product of its digits is 5040, while the sum is 30.

The square root of 6711645 is about 2590.6842725427. The cubic root of 6711645 is about 188.6295197682.

It can be divided in two parts, 67116 and 45, that added together give a triangular number (67161 = T₃₆₆).

The spelling of 6711645 in words is "six million, seven hundred eleven thousand, six hundred forty-five".