636465 has 16 divisors (see below), whose sum is σ = 1028736. Its totient is φ = 336000.

The previous prime is 636421. The next prime is 636469. The reversal of 636465 is 564636.

636465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 636465 - 2¹⁰ = 635441 is a 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 636465.

It is not an unprimeable number, because it can be changed into a prime (636469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2125 + ... + 2405.

It is an arithmetic number, because the mean of its divisors is an integer number (64296).

2⁶³⁶⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

636465 is a deficient number, since it is larger than the sum of its proper divisors (392271).

636465 is a wasteful number, since it uses less digits than its factorization.

636465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its digits is 12960, while the sum is 30.

The square root of 636465 is about 797.7875657091. The cubic root of 636465 is about 86.0184294378.

The spelling of 636465 in words is "six hundred thirty-six thousand, four hundred sixty-five".