6985845 has 40 divisors (see below), whose sum is σ = 12824064. Its totient is φ = 3636576.

The previous prime is 6985841. The next prime is 6985871. The reversal of 6985845 is 5485896.

6985845 is a `hidden beast` number, since 69 + 8 + 584 + 5 = 666.

It is not a de Polignac number, because 6985845 - 2² = 6985841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6985845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6985841) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18852 + ... + 19218.

Almost surely, 2^6985845 is an apocalyptic number.

It is an amenable number.

6985845 is a deficient number, since it is larger than the sum of its proper divisors (5838219).

6985845 is a wasteful number, since it uses less digits than its factorization.

6985845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 422 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 6985845 is about 2643.0749138078. The cubic root of 6985845 is about 191.1640905964.

The spelling of 6985845 in words is "six million, nine hundred eighty-five thousand, eight hundred forty-five".