720850 has 24 divisors (see below), whose sum is σ = 1445220. Its totient is φ = 265920.

The previous prime is 720847. The next prime is 720857. The reversal of 720850 is 58027.

It can be written as a sum of positive squares in 6 ways, for example, as 10201 + 710649 = 101^2 + 843^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (720857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96 + ... + 1204.

2⁷²⁰⁸⁵⁰ is an apocalyptic number.

720850 is an abundant number, since it is smaller than the sum of its proper divisors (724370).

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

720850 is a wasteful number, since it uses less digits than its factorization.

720850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 720850 is about 849.0288569890. The cubic root of 720850 is about 89.6633513759.

Adding to 720850 its reverse (58027), we get a palindrome (778877).

The spelling of 720850 in words is "seven hundred twenty thousand, eight hundred fifty".