720347 has 8 divisors (see below), whose sum is σ = 783360. Its totient is φ = 659880.

The previous prime is 720319. The next prime is 720359. The reversal of 720347 is 743027.

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 720347 - 2⁶ = 720283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720367) 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, 23 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (97920).

2⁷²⁰³⁴⁷ is an apocalyptic number.

720347 is a deficient number, since it is larger than the sum of its proper divisors (63013).

720347 is a wasteful number, since it uses less digits than its factorization.

720347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 720347 is about 848.7325845047. The cubic root of 720347 is about 89.6424912061.

The spelling of 720347 in words is "seven hundred twenty thousand, three hundred forty-seven", and thus it is an iban number.