6980981 has 6 divisors (see below), whose sum is σ = 8120790. Its totient is φ = 5983656.

The previous prime is 6980977. The next prime is 6981011. The reversal of 6980981 is 1890896.

It can be written as a sum of positive squares in only one way, i.e., 5564881 + 1416100 = 2359^2 + 1190^2 .

It is not a de Polignac number, because 6980981 - 2² = 6980977 is a prime.

It is a super-2 number, since 2×6980981² = 97468191444722, 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 (6980971) 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, 71186 + ... + 71283.

It is an arithmetic number, because the mean of its divisors is an integer number (1353465).

Almost surely, 2^6980981 is an apocalyptic number.

It is an amenable number.

6980981 is a deficient number, since it is larger than the sum of its proper divisors (1139809).

6980981 is a wasteful number, since it uses less digits than its factorization.

6980981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142483 (or 142476 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 6980981 is about 2642.1546131898. The cubic root of 6980981 is about 191.1197133344.

The spelling of 6980981 in words is "six million, nine hundred eighty thousand, nine hundred eighty-one".