723198097 has 2 divisors, whose sum is σ = 723198098. Its totient is φ = 723198096.

The previous prime is 723198061. The next prime is 723198167. The reversal of 723198097 is 790891327.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 723018321 + 179776 = 26889^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723198097 is a prime.

It is not a weakly prime, because it can be changed into another prime (723198797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361599048 + 361599049.

It is an arithmetic number, because the mean of its divisors is an integer number (361599049).

Almost surely, 2^723198097 is an apocalyptic number.

It is an amenable number.

723198097 is a deficient number, since it is larger than the sum of its proper divisors (1).

723198097 is an equidigital number, since it uses as much as digits as its factorization.

723198097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 723198097 is about 26892.3427205590. The cubic root of 723198097 is about 897.6060233270.

The spelling of 723198097 in words is "seven hundred twenty-three million, one hundred ninety-eight thousand, ninety-seven".