6946681 has 6 divisors (see below), whose sum is σ = 8080890. Its totient is φ = 5954256.

The previous prime is 6946669. The next prime is 6946703. The reversal of 6946681 is 1866496.

It can be written as a sum of positive squares in only one way, i.e., 6456681 + 490000 = 2541^2 + 700^2 .

It is not a de Polignac number, because 6946681 - 2²¹ = 4849529 is a prime.

It is a super-2 number, since 2×6946681² = 96512753831522, which contains 22 as substring.

It is a Duffinian number.

6946681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6946651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70836 + ... + 70933.

It is an arithmetic number, because the mean of its divisors is an integer number (1346815).

Almost surely, 2^6946681 is an apocalyptic number.

It is an amenable number.

6946681 is a deficient number, since it is larger than the sum of its proper divisors (1134209).

6946681 is a wasteful number, since it uses less digits than its factorization.

6946681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141783 (or 141776 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 6946681 is about 2635.6557058918. The cubic root of 6946681 is about 190.8061866298.

The spelling of 6946681 in words is "six million, nine hundred forty-six thousand, six hundred eighty-one".