636089 has 12 divisors (see below), whose sum is σ = 707328. Its totient is φ = 571200.

The previous prime is 636073. The next prime is 636107. The reversal of 636089 is 980636.

It is a happy number.

636089 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 636089 - 2⁴ = 636073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636059) 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 in 11 ways as a sum of consecutive naturals, for example, 8924 + ... + 8994.

It is an arithmetic number, because the mean of its divisors is an integer number (58944).

2⁶³⁶⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

636089 is a deficient number, since it is larger than the sum of its proper divisors (71239).

636089 is a wasteful number, since it uses less digits than its factorization.

636089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 636089 is about 797.5518791903. The cubic root of 636089 is about 86.0014872647.

The spelling of 636089 in words is "six hundred thirty-six thousand, eighty-nine".