720373 has 2 divisors, whose sum is σ = 720374.
Its totient is φ = 720372.
The previous prime is 720367. The next prime is 720397. The reversal of 720373 is 373027.
It is the 347-th star number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 528529 + 191844 = 727^2 + 438^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-720373 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (720173) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360186 + 360187.
It is an arithmetic number, because the mean of its divisors is an integer number (360187).
2720373 is an apocalyptic number.
It is an amenable number.
720373 is a deficient number, since it is larger than the sum of its proper divisors (1).
720373 is an equidigital number, since it uses as much as digits as its factorization.
720373 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 882, while the sum is 22.
The square root of 720373 is about 848.7479013229.
The cubic root of 720373 is about 89.6435697034.
The spelling of 720373 in words is "seven hundred twenty thousand, three hundred seventy-three", and thus it is an iban number.