720197 has 2 divisors, whose sum is σ = 720198. Its totient is φ = 720196.

The previous prime is 720193. The next prime is 720211. The reversal of 720197 is 791027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 638401 + 81796 = 799^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 720197 - 2² = 720193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360098 + 360099.

It is an arithmetic number, because the mean of its divisors is an integer number (360099).

2⁷²⁰¹⁹⁷ is an apocalyptic number.

It is an amenable number.

720197 is a deficient number, since it is larger than the sum of its proper divisors (1).

720197 is an equidigital number, since it uses as much as digits as its factorization.

720197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 720197 is about 848.6442128478. The cubic root of 720197 is about 89.6362685999.

The spelling of 720197 in words is "seven hundred twenty thousand, one hundred ninety-seven".