720735 has 8 divisors (see below), whose sum is σ = 1153200. Its totient is φ = 384384.

The previous prime is 720703. The next prime is 720743. The reversal of 720735 is 537027.

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

It is not a de Polignac number, because 720735 - 2⁵ = 720703 is a prime.

720735 is a lucky number.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24010 + ... + 24039.

It is an arithmetic number, because the mean of its divisors is an integer number (144150).

2⁷²⁰⁷³⁵ is an apocalyptic number.

720735 is a deficient number, since it is larger than the sum of its proper divisors (432465).

720735 is a wasteful number, since it uses less digits than its factorization.

720735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48057.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 720735 is about 848.9611298522. The cubic root of 720735 is about 89.6585830081.

The spelling of 720735 in words is "seven hundred twenty thousand, seven hundred thirty-five".