6875215 has 4 divisors (see below), whose sum is σ = 8250264. Its totient is φ = 5500168.

The previous prime is 6875203. The next prime is 6875221. The reversal of 6875215 is 5125786.

6875215 = 670² + 671² + ... + 684².

6875215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6875215 is a prime.

It is a Duffinian number.

It is a congruent 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, 687517 + ... + 687526.

It is an arithmetic number, because the mean of its divisors is an integer number (2062566).

Almost surely, 2^6875215 is an apocalyptic number.

6875215 is a deficient number, since it is larger than the sum of its proper divisors (1375049).

6875215 is a wasteful number, since it uses less digits than its factorization.

6875215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375048.

The product of its digits is 16800, while the sum is 34.

The square root of 6875215 is about 2622.0631189962. The cubic root of 6875215 is about 190.1496051623.

The spelling of 6875215 in words is "six million, eight hundred seventy-five thousand, two hundred fifteen".