720005197 has 2 divisors, whose sum is σ = 720005198. Its totient is φ = 720005196.

The previous prime is 720005161. The next prime is 720005207. The reversal of 720005197 is 791500027.

720005197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610781796 + 109223401 = 24714^2 + 10451^2 .

It is an emirp because it is prime and its reverse (791500027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720005197 - 2²⁷ = 585787469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720005137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360002598 + 360002599.

It is an arithmetic number, because the mean of its divisors is an integer number (360002599).

Almost surely, 2^720005197 is an apocalyptic number.

It is an amenable number.

720005197 is a deficient number, since it is larger than the sum of its proper divisors (1).

720005197 is an equidigital number, since it uses as much as digits as its factorization.

720005197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 720005197 is about 26832.9125702001. The cubic root of 720005197 is about 896.2831057748.

The spelling of 720005197 in words is "seven hundred twenty million, five thousand, one hundred ninety-seven".