636287 has 2 divisors, whose sum is σ = 636288. Its totient is φ = 636286.

The previous prime is 636283. The next prime is 636301. The reversal of 636287 is 782636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 636287 - 2² = 636283 is a prime.

It is a super-2 number, since 2×636287² = 809722292738, which contains 22 as substring.

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 636287.

It is not a weakly prime, because it can be changed into another prime (636283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318143 + 318144.

It is an arithmetic number, because the mean of its divisors is an integer number (318144).

2⁶³⁶²⁸⁷ is an apocalyptic number.

636287 is a deficient number, since it is larger than the sum of its proper divisors (1).

636287 is an equidigital number, since it uses as much as digits as its factorization.

636287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 636287 is about 797.6759993882. The cubic root of 636287 is about 86.0104097729.

The spelling of 636287 in words is "six hundred thirty-six thousand, two hundred eighty-seven".