6730729 has 8 divisors (see below), whose sum is σ = 6974208. Its totient is φ = 6491520.

The previous prime is 6730727. The next prime is 6730771. The reversal of 6730729 is 9270376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6730729 - 2¹ = 6730727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6730694 and 6730703.

It is not an unprimeable number, because it can be changed into a prime (6730727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2329 + ... + 4345.

It is an arithmetic number, because the mean of its divisors is an integer number (871776).

Almost surely, 2^6730729 is an apocalyptic number.

It is an amenable number.

6730729 is a deficient number, since it is larger than the sum of its proper divisors (243479).

6730729 is a wasteful number, since it uses less digits than its factorization.

6730729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 6730729 is about 2594.3648548344. The cubic root of 6730729 is about 188.8081346592.

The spelling of 6730729 in words is "six million, seven hundred thirty thousand, seven hundred twenty-nine".