197497613 has 2 divisors, whose sum is σ = 197497614. Its totient is φ = 197497612.

The previous prime is 197497591. The next prime is 197497639. The reversal of 197497613 is 316794791.

197497613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146845924 + 50651689 = 12118^2 + 7117^2 .

It is a cyclic number.

It is not a de Polignac number, because 197497613 - 2⁶ = 197497549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197497213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98748806 + 98748807.

It is an arithmetic number, because the mean of its divisors is an integer number (98748807).

Almost surely, 2^197497613 is an apocalyptic number.

It is an amenable number.

197497613 is a deficient number, since it is larger than the sum of its proper divisors (1).

197497613 is an equidigital number, since it uses as much as digits as its factorization.

197497613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 197497613 is about 14053.3843966498. The cubic root of 197497613 is about 582.3542961109.

The spelling of 197497613 in words is "one hundred ninety-seven million, four hundred ninety-seven thousand, six hundred thirteen".