77468197 has 2 divisors, whose sum is σ = 77468198. Its totient is φ = 77468196.

The previous prime is 77468179. The next prime is 77468207. The reversal of 77468197 is 79186477.

Together with previous prime (77468179) 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., 77422401 + 45796 = 8799^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 77468197 - 2¹¹ = 77466149 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77468197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77468497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38734098 + 38734099.

It is an arithmetic number, because the mean of its divisors is an integer number (38734099).

Almost surely, 2^77468197 is an apocalyptic number.

It is an amenable number.

77468197 is a deficient number, since it is larger than the sum of its proper divisors (1).

77468197 is an equidigital number, since it uses as much as digits as its factorization.

77468197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 49.

The square root of 77468197 is about 8801.6019564622. The cubic root of 77468197 is about 426.2926218764.

The spelling of 77468197 in words is "seventy-seven million, four hundred sixty-eight thousand, one hundred ninety-seven".