6784981 has 6 divisors (see below), whose sum is σ = 7892790. Its totient is φ = 5815656.

The previous prime is 6784961. The next prime is 6784997. The reversal of 6784981 is 1894876.

6784981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5499025 + 1285956 = 2345^2 + 1134^2 .

It is not a de Polignac number, because 6784981 - 2¹¹ = 6782933 is a prime.

It is a super-2 number, since 2×6784981² = 92071934340722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6784961) 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, 69186 + ... + 69283.

It is an arithmetic number, because the mean of its divisors is an integer number (1315465).

Almost surely, 2^6784981 is an apocalyptic number.

It is an amenable number.

6784981 is a deficient number, since it is larger than the sum of its proper divisors (1107809).

6784981 is a wasteful number, since it uses less digits than its factorization.

6784981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138483 (or 138476 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 6784981 is about 2604.7996084152. The cubic root of 6784981 is about 189.3140640174.

The spelling of 6784981 in words is "six million, seven hundred eighty-four thousand, nine hundred eighty-one".