6731240 has 16 divisors (see below), whose sum is σ = 15145380. Its totient is φ = 2692480.

The previous prime is 6731239. The next prime is 6731267. The reversal of 6731240 is 421376.

It can be written as a sum of positive squares in 2 ways, for example, as 6666724 + 64516 = 2582^2 + 254^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 84101 + ... + 84180.

Almost surely, 2^6731240 is an apocalyptic number.

It is an amenable number.

6731240 is an abundant number, since it is smaller than the sum of its proper divisors (8414140).

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

6731240 is a wasteful number, since it uses less digits than its factorization.

6731240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168292 (or 168288 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 6731240 is about 2594.4633356438. The cubic root of 6731240 is about 188.8129126714.

The spelling of 6731240 in words is "six million, seven hundred thirty-one thousand, two hundred forty".