261468197 has 2 divisors, whose sum is σ = 261468198. Its totient is φ = 261468196.

The previous prime is 261468187. The next prime is 261468203. The reversal of 261468197 is 791864162.

261468197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258598561 + 2869636 = 16081^2 + 1694^2 .

It is a cyclic number.

It is not a de Polignac number, because 261468197 - 2²⁴ = 244690981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261468107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130734098 + 130734099.

It is an arithmetic number, because the mean of its divisors is an integer number (130734099).

Almost surely, 2^261468197 is an apocalyptic number.

It is an amenable number.

261468197 is a deficient number, since it is larger than the sum of its proper divisors (1).

261468197 is an equidigital number, since it uses as much as digits as its factorization.

261468197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 261468197 is about 16169.9782621994. The cubic root of 261468197 is about 639.4495568281.

It can be divided in two parts, 26146 and 8197, that added together give a palindrome (34343).

The spelling of 261468197 in words is "two hundred sixty-one million, four hundred sixty-eight thousand, one hundred ninety-seven".