6985215 has 48 divisors (see below), whose sum is σ = 13411008. Its totient is φ = 3345408.

The previous prime is 6985213. The next prime is 6985229. The reversal of 6985215 is 5125896.

It is a happy number.

6985215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6985215 - 2¹ = 6985213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6985215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6985213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17397 + ... + 17793.

It is an arithmetic number, because the mean of its divisors is an integer number (279396).

Almost surely, 2^6985215 is an apocalyptic number.

6985215 is a deficient number, since it is larger than the sum of its proper divisors (6425793).

6985215 is a wasteful number, since it uses less digits than its factorization.

6985215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 445 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 6985215 is about 2642.9557317519. The cubic root of 6985215 is about 191.1583438806.

The spelling of 6985215 in words is "six million, nine hundred eighty-five thousand, two hundred fifteen".