6720349 has 8 divisors (see below), whose sum is σ = 6840288. Its totient is φ = 6601680.

The previous prime is 6720331. The next prime is 6720353. The reversal of 6720349 is 9430276.

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 6720349 - 2⁹ = 6719837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6720349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6723349) 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 7 ways as a sum of consecutive naturals, for example, 19194 + ... + 19540.

It is an arithmetic number, because the mean of its divisors is an integer number (855036).

Almost surely, 2^6720349 is an apocalyptic number.

It is an amenable number.

6720349 is a deficient number, since it is larger than the sum of its proper divisors (119939).

6720349 is a wasteful number, since it uses less digits than its factorization.

6720349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 6720349 is about 2592.3635933256. The cubic root of 6720349 is about 188.7110259720.

The spelling of 6720349 in words is "six million, seven hundred twenty thousand, three hundred forty-nine".