720982 has 8 divisors (see below), whose sum is σ = 1110816. Its totient is φ = 350712.

The previous prime is 720971. The next prime is 720983. The reversal of 720982 is 289027.

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

It is a self number, because there is not a number n which added to its sum of digits gives 720982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720983) by changing a digit.

720982 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4798 + ... + 4945.

It is an arithmetic number, because the mean of its divisors is an integer number (138852).

2⁷²⁰⁹⁸² is an apocalyptic number.

720982 is a deficient number, since it is larger than the sum of its proper divisors (389834).

720982 is a wasteful number, since it uses less digits than its factorization.

720982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 720982 is about 849.1065893043. The cubic root of 720982 is about 89.6688240077.

The spelling of 720982 in words is "seven hundred twenty thousand, nine hundred eighty-two".