6871951 has 4 divisors (see below), whose sum is σ = 6907032. Its totient is φ = 6836872.

The previous prime is 6871933. The next prime is 6871979. The reversal of 6871951 is 1591786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6871951 - 2¹⁷ = 6740879 is a prime.

It is a Duffinian number.

6871951 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6871951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6871981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17245 + ... + 17638.

It is an arithmetic number, because the mean of its divisors is an integer number (1726758).

Almost surely, 2^6871951 is an apocalyptic number.

6871951 is a deficient number, since it is larger than the sum of its proper divisors (35081).

6871951 is a wasteful number, since it uses less digits than its factorization.

6871951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35080.

The product of its digits is 15120, while the sum is 37.

The square root of 6871951 is about 2621.4406344604. The cubic root of 6871951 is about 190.1195093009.

The spelling of 6871951 in words is "six million, eight hundred seventy-one thousand, nine hundred fifty-one".