720996 has 12 divisors (see below), whose sum is σ = 1682352. Its totient is φ = 240328.

The previous prime is 720991. The next prime is 720997. The reversal of 720996 is 699027.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720996.

It is not an unprimeable number, because it can be changed into a prime (720991) by changing a digit.

720996 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, 30030 + ... + 30053.

It is an arithmetic number, because the mean of its divisors is an integer number (140196).

2⁷²⁰⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

720996 is an abundant number, since it is smaller than the sum of its proper divisors (961356).

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

720996 is a wasteful number, since it uses less digits than its factorization.

720996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60090 (or 60088 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 720996 is about 849.1148332234. The cubic root of 720996 is about 89.6694043992.

The spelling of 720996 in words is "seven hundred twenty thousand, nine hundred ninety-six".