427686197 has 2 divisors, whose sum is σ = 427686198. Its totient is φ = 427686196.

The previous prime is 427686163. The next prime is 427686241. The reversal of 427686197 is 791686724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264843076 + 162843121 = 16274^2 + 12761^2 .

It is a cyclic number.

It is not a de Polignac number, because 427686197 - 2¹⁴ = 427669813 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 (427686107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213843098 + 213843099.

It is an arithmetic number, because the mean of its divisors is an integer number (213843099).

Almost surely, 2^427686197 is an apocalyptic number.

It is an amenable number.

427686197 is a deficient number, since it is larger than the sum of its proper divisors (1).

427686197 is an equidigital number, since it uses as much as digits as its factorization.

427686197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 427686197 is about 20680.5753546655. The cubic root of 427686197 is about 753.4279803595.

The spelling of 427686197 in words is "four hundred twenty-seven million, six hundred eighty-six thousand, one hundred ninety-seven".