720773 has 2 divisors, whose sum is σ = 720774. Its totient is φ = 720772.

The previous prime is 720767. The next prime is 720779. The reversal of 720773 is 377027.

It is a balanced prime because it is at equal distance from previous prime (720767) and next prime (720779).

It can be written as a sum of positive squares in only one way, i.e., 717409 + 3364 = 847^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 720773 - 2¹⁰ = 719749 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720773.

It is not a weakly prime, because it can be changed into another prime (720779) by changing a digit.

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 as a sum of consecutive naturals, namely, 360386 + 360387.

It is an arithmetic number, because the mean of its divisors is an integer number (360387).

2⁷²⁰⁷⁷³ is an apocalyptic number.

It is an amenable number.

720773 is a deficient number, since it is larger than the sum of its proper divisors (1).

720773 is an equidigital number, since it uses as much as digits as its factorization.

720773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058, while the sum is 26.

The square root of 720773 is about 848.9835098516. The cubic root of 720773 is about 89.6601586987.

The spelling of 720773 in words is "seven hundred twenty thousand, seven hundred seventy-three", and thus it is an iban number.