6975981 has 12 divisors (see below), whose sum is σ = 10142652. Its totient is φ = 4620096.

The previous prime is 6975971. The next prime is 6976033. The reversal of 6975981 is 1895796.

It can be written as a sum of positive squares in 2 ways, for example, as 2528100 + 4447881 = 1590^2 + 2109^2 .

It is not a de Polignac number, because 6975981 - 2¹¹ = 6973933 is a prime.

It is a super-2 number, since 2×6975981² = 97328621824722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6975971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056 + ... + 3881.

It is an arithmetic number, because the mean of its divisors is an integer number (845221).

Almost surely, 2^6975981 is an apocalyptic number.

It is an amenable number.

6975981 is a deficient number, since it is larger than the sum of its proper divisors (3166671).

6975981 is a wasteful number, since it uses less digits than its factorization.

6975981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100 (or 5097 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 6975981 is about 2641.2082462388. The cubic root of 6975981 is about 191.0740737698.

The spelling of 6975981 in words is "six million, nine hundred seventy-five thousand, nine hundred eighty-one".