6940686 has 32 divisors (see below), whose sum is σ = 14528160. Its totient is φ = 2207744.

The previous prime is 6940679. The next prime is 6940691. The reversal of 6940686 is 6860496.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19486 + ... + 19838.

It is an arithmetic number, because the mean of its divisors is an integer number (454005).

Almost surely, 2^6940686 is an apocalyptic number.

6940686 is an abundant number, since it is smaller than the sum of its proper divisors (7587474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6940686 is a wasteful number, since it uses less digits than its factorization.

6940686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 6940686 is about 2634.5181722660. The cubic root of 6940686 is about 190.7512821219.

It can be divided in two parts, 6940 and 686, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 6940686 in words is "six million, nine hundred forty thousand, six hundred eighty-six".