6871617 has 6 divisors (see below), whose sum is σ = 9925682. Its totient is φ = 4581072.

The previous prime is 6871583. The next prime is 6871639. The reversal of 6871617 is 7161786.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6230016 + 641601 = 2496^2 + 801^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6871617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6871717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 381748 + ... + 381765.

Almost surely, 2^6871617 is an apocalyptic number.

It is an amenable number.

6871617 is a deficient number, since it is larger than the sum of its proper divisors (3054065).

6871617 is a wasteful number, since it uses less digits than its factorization.

6871617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763519 (or 763516 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 6871617 is about 2621.3769282574. The cubic root of 6871617 is about 190.1164291011.

It can be divided in two parts, 687 and 1617, that added together give a square (2304 = 48²).

The spelling of 6871617 in words is "six million, eight hundred seventy-one thousand, six hundred seventeen".