720016 has 20 divisors (see below), whose sum is σ = 1522224. Its totient is φ = 327200.

The previous prime is 720007. The next prime is 720019. The reversal of 720016 is 610027.

720016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (720019) by changing a digit.

720016 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870 + ... + 2221.

2⁷²⁰⁰¹⁶ is an apocalyptic number.

It is an amenable number.

720016 is an abundant number, since it is smaller than the sum of its proper divisors (802208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720016 is a wasteful number, since it uses less digits than its factorization.

720016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110 (or 4104 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 720016 is about 848.5375654619. The cubic root of 720016 is about 89.6287588380.

The spelling of 720016 in words is "seven hundred twenty thousand, sixteen".