197477641 has 2 divisors, whose sum is σ = 197477642. Its totient is φ = 197477640.

The previous prime is 197477603. The next prime is 197477669. The reversal of 197477641 is 146774791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180338041 + 17139600 = 13429^2 + 4140^2 .

It is a cyclic number.

It is not a de Polignac number, because 197477641 - 2¹³ = 197469449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197477591 and 197477600.

It is not a weakly prime, because it can be changed into another prime (197477681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98738820 + 98738821.

It is an arithmetic number, because the mean of its divisors is an integer number (98738821).

Almost surely, 2^197477641 is an apocalyptic number.

It is an amenable number.

197477641 is a deficient number, since it is larger than the sum of its proper divisors (1).

197477641 is an equidigital number, since it uses as much as digits as its factorization.

197477641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 46.

The square root of 197477641 is about 14052.6738025189. The cubic root of 197477641 is about 582.3346652035.

The spelling of 197477641 in words is "one hundred ninety-seven million, four hundred seventy-seven thousand, six hundred forty-one".