720346673 has 8 divisors (see below), whose sum is σ = 740839488. Its totient is φ = 699907824.

The previous prime is 720346663. The next prime is 720346703. The reversal of 720346673 is 376643027.

It is a happy number.

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 720346673 - 2¹² = 720342577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720346663) 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, 14390 + ... + 40592.

It is an arithmetic number, because the mean of its divisors is an integer number (92604936).

Almost surely, 2^720346673 is an apocalyptic number.

It is an amenable number.

720346673 is a deficient number, since it is larger than the sum of its proper divisors (20492815).

720346673 is a wasteful number, since it uses less digits than its factorization.

720346673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26983.

The product of its (nonzero) digits is 127008, while the sum is 38.

The square root of 720346673 is about 26839.2748225432. The cubic root of 720346673 is about 896.4247764179.

The spelling of 720346673 in words is "seven hundred twenty million, three hundred forty-six thousand, six hundred seventy-three".