6730731 has 24 divisors (see below), whose sum is σ = 11697920. Its totient is φ = 3643056.

The previous prime is 6730727. The next prime is 6730771. The reversal of 6730731 is 1370376.

It is not a de Polignac number, because 6730731 - 2² = 6730727 is a prime.

It is a super-2 number, since 2×6730731² = 90605479588722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6730695 and 6730704.

It is not an unprimeable number, because it can be changed into a prime (6730771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1615 + ... + 4008.

Almost surely, 2^6730731 is an apocalyptic number.

6730731 is a deficient number, since it is larger than the sum of its proper divisors (4967189).

6730731 is a wasteful number, since it uses less digits than its factorization.

6730731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655 (or 5652 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 6730731 is about 2594.3652402852. The cubic root of 6730731 is about 188.8081533603.

The spelling of 6730731 in words is "six million, seven hundred thirty thousand, seven hundred thirty-one".