720802 has 8 divisors (see below), whose sum is σ = 1096236. Its totient is φ = 355392.

The previous prime is 720793. The next prime is 720829. The reversal of 720802 is 208027.

It is a Cunningham number, because it is equal to 849²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 720801 + 1 = 849^2 + 1^2 .

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 720802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2323 + ... + 2614.

2⁷²⁰⁸⁰² is an apocalyptic number.

720802 is a deficient number, since it is larger than the sum of its proper divisors (375434).

720802 is a wasteful number, since it uses less digits than its factorization.

720802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 720802 is about 849.0005889279. Note that the first 3 decimals coincide. The cubic root of 720802 is about 89.6613611623.

Adding to 720802 its reverse (208027), we get a palindrome (928829).

The spelling of 720802 in words is "seven hundred twenty thousand, eight hundred two".