636071 has 2 divisors, whose sum is σ = 636072. Its totient is φ = 636070.

The previous prime is 636061. The next prime is 636073. The reversal of 636071 is 170636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 636071 - 2¹⁴ = 619687 is a prime.

Together with 636073, it forms a pair of twin primes.

It is a Chen prime.

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 636071.

It is not a weakly prime, because it can be changed into another prime (636073) 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, 318035 + 318036.

It is an arithmetic number, because the mean of its divisors is an integer number (318036).

2⁶³⁶⁰⁷¹ is an apocalyptic number.

636071 is a deficient number, since it is larger than the sum of its proper divisors (1).

636071 is an equidigital number, since it uses as much as digits as its factorization.

636071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 636071 is about 797.5405945781. The cubic root of 636071 is about 86.0006760358. Note that the first 3 decimals are identical.

The spelling of 636071 in words is "six hundred thirty-six thousand, seventy-one".