208486573 has 2 divisors, whose sum is σ = 208486574. Its totient is φ = 208486572.

The previous prime is 208486571. The next prime is 208486591. The reversal of 208486573 is 375684802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185041609 + 23444964 = 13603^2 + 4842^2 .

It is a cyclic number.

It is not a de Polignac number, because 208486573 - 2¹ = 208486571 is a prime.

It is a super-2 number, since 2×208486573² = 86933302242568658, which contains 22 as substring.

Together with 208486571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208486571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104243286 + 104243287.

It is an arithmetic number, because the mean of its divisors is an integer number (104243287).

Almost surely, 2^208486573 is an apocalyptic number.

It is an amenable number.

208486573 is a deficient number, since it is larger than the sum of its proper divisors (1).

208486573 is an equidigital number, since it uses as much as digits as its factorization.

208486573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 208486573 is about 14439.0641317227. The cubic root of 208486573 is about 592.9608636977.

The spelling of 208486573 in words is "two hundred eight million, four hundred eighty-six thousand, five hundred seventy-three".