986564197 has 2 divisors, whose sum is σ = 986564198. Its totient is φ = 986564196.

The previous prime is 986564177. The next prime is 986564203. The reversal of 986564197 is 791465689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 980566596 + 5997601 = 31314^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 986564197 - 2⁷ = 986564069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (986564167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493282098 + 493282099.

It is an arithmetic number, because the mean of its divisors is an integer number (493282099).

Almost surely, 2^986564197 is an apocalyptic number.

It is an amenable number.

986564197 is a deficient number, since it is larger than the sum of its proper divisors (1).

986564197 is an equidigital number, since it uses as much as digits as its factorization.

986564197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 55.

The square root of 986564197 is about 31409.6194978545. The cubic root of 986564197 is about 995.5011900600.

The spelling of 986564197 in words is "nine hundred eighty-six million, five hundred sixty-four thousand, one hundred ninety-seven".