636473 has 2 divisors, whose sum is σ = 636474. Its totient is φ = 636472.

The previous prime is 636469. The next prime is 636499. The reversal of 636473 is 374636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 157609 = 692^2 + 397^2 .

It is a cyclic number.

It is not a de Polignac number, because 636473 - 2² = 636469 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 3⁶ + 4² + 6⁷ + 7⁵ + 3¹⁰ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 636473.

It is not a weakly prime, because it can be changed into another prime (636403) 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, 318236 + 318237.

It is an arithmetic number, because the mean of its divisors is an integer number (318237).

2⁶³⁶⁴⁷³ is an apocalyptic number.

It is an amenable number.

636473 is a deficient number, since it is larger than the sum of its proper divisors (1).

636473 is an equidigital number, since it uses as much as digits as its factorization.

636473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 29.

The square root of 636473 is about 797.7925795594. The cubic root of 636473 is about 86.0187898370.

The spelling of 636473 in words is "six hundred thirty-six thousand, four hundred seventy-three".