197652397 has 2 divisors, whose sum is σ = 197652398. Its totient is φ = 197652396.

The previous prime is 197652379. The next prime is 197652401. The reversal of 197652397 is 793256791.

Together with previous prime (197652379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169286121 + 28366276 = 13011^2 + 5326^2 .

It is a cyclic number.

It is not a de Polignac number, because 197652397 - 2¹⁵ = 197619629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197652397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197652097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98826198 + 98826199.

It is an arithmetic number, because the mean of its divisors is an integer number (98826199).

Almost surely, 2^197652397 is an apocalyptic number.

It is an amenable number.

197652397 is a deficient number, since it is larger than the sum of its proper divisors (1).

197652397 is an equidigital number, since it uses as much as digits as its factorization.

197652397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 49.

The square root of 197652397 is about 14058.8903189405. The cubic root of 197652397 is about 582.5063917711.

The spelling of 197652397 in words is "one hundred ninety-seven million, six hundred fifty-two thousand, three hundred ninety-seven".