197396653 has 2 divisors, whose sum is σ = 197396654. Its totient is φ = 197396652.

The previous prime is 197396651. The next prime is 197396687. The reversal of 197396653 is 356693791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193404649 + 3992004 = 13907^2 + 1998^2 .

It is an emirp because it is prime and its reverse (356693791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197396653 - 2¹ = 197396651 is a prime.

Together with 197396651, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 197396597 and 197396606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197396651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98698326 + 98698327.

It is an arithmetic number, because the mean of its divisors is an integer number (98698327).

Almost surely, 2^197396653 is an apocalyptic number.

It is an amenable number.

197396653 is a deficient number, since it is larger than the sum of its proper divisors (1).

197396653 is an equidigital number, since it uses as much as digits as its factorization.

197396653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 49.

The square root of 197396653 is about 14049.7919201674. The cubic root of 197396653 is about 582.2550467914.

The spelling of 197396653 in words is "one hundred ninety-seven million, three hundred ninety-six thousand, six hundred fifty-three".