6731940 has 24 divisors (see below), whose sum is σ = 18849600. Its totient is φ = 1795168.

The previous prime is 6731927. The next prime is 6731941. The reversal of 6731940 is 491376.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6731898 and 6731907.

It is not an unprimeable number, because it can be changed into a prime (6731941) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 56040 + ... + 56159.

It is an arithmetic number, because the mean of its divisors is an integer number (785400).

Almost surely, 2^6731940 is an apocalyptic number.

6731940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6731940 is an abundant number, since it is smaller than the sum of its proper divisors (12117660).

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

6731940 is a wasteful number, since it uses less digits than its factorization.

6731940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112211 (or 112209 counting only the distinct ones).

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

The square root of 6731940 is about 2594.5982347947. The cubic root of 6731940 is about 188.8194575010.

The spelling of 6731940 in words is "six million, seven hundred thirty-one thousand, nine hundred forty".