6940731 has 16 divisors (see below), whose sum is σ = 10736384. Its totient is φ = 3906144.

The previous prime is 6940729. The next prime is 6940741. The reversal of 6940731 is 1370496.

It is a happy number.

It is not a de Polignac number, because 6940731 - 2¹ = 6940729 is a prime.

It is a super-2 number, since 2×6940731² = 96347493628722, which contains 22 as substring.

It is a Duffinian number.

6940731 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6940711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1060 + ... + 3873.

It is an arithmetic number, because the mean of its divisors is an integer number (671024).

Almost surely, 2^6940731 is an apocalyptic number.

6940731 is a deficient number, since it is larger than the sum of its proper divisors (3795653).

6940731 is a wasteful number, since it uses less digits than its factorization.

6940731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 6940731 is about 2634.5267127133. The cubic root of 6940731 is about 190.7516943669.

The spelling of 6940731 in words is "six million, nine hundred forty thousand, seven hundred thirty-one".