6945381 has 12 divisors (see below), whose sum is σ = 10303852. Its totient is φ = 4504896.

The previous prime is 6945361. The next prime is 6945397. The reversal of 6945381 is 1835496.

It can be written as a sum of positive squares in 2 ways, for example, as 6548481 + 396900 = 2559^2 + 630^2 .

It is not a de Polignac number, because 6945381 - 2⁹ = 6944869 is a prime.

It is a super-2 number, since 2×6945381² = 96476634470322, 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 (6945361) 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, 10096 + ... + 10761.

Almost surely, 2^6945381 is an apocalyptic number.

It is an amenable number.

6945381 is a deficient number, since it is larger than the sum of its proper divisors (3358471).

6945381 is a wasteful number, since it uses less digits than its factorization.

6945381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20900 (or 20897 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 6945381 is about 2635.4090764054. The cubic root of 6945381 is about 190.7942834146.

The spelling of 6945381 in words is "six million, nine hundred forty-five thousand, three hundred eighty-one".