720193 has 2 divisors, whose sum is σ = 720194. Its totient is φ = 720192.

The previous prime is 720179. The next prime is 720197. The reversal of 720193 is 391027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 1089 = 848^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 720193 - 2⁹ = 719681 is a prime.

It is not a weakly prime, because it can be changed into another prime (720197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360096 + 360097.

It is an arithmetic number, because the mean of its divisors is an integer number (360097).

2⁷²⁰¹⁹³ is an apocalyptic number.

It is an amenable number.

720193 is a deficient number, since it is larger than the sum of its proper divisors (1).

720193 is an equidigital number, since it uses as much as digits as its factorization.

720193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 720193 is about 848.6418561443. The cubic root of 720193 is about 89.6361026519.

The spelling of 720193 in words is "seven hundred twenty thousand, one hundred ninety-three".