64635 has 16 divisors (see below), whose sum is σ = 107520. Its totient is φ = 33120.

The previous prime is 64633. The next prime is 64661. The reversal of 64635 is 53646.

It is not a de Polignac number, because 64635 - 2¹ = 64633 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (64633) 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, 396 + ... + 534.

It is an arithmetic number, because the mean of its divisors is an integer number (6720).

2⁶⁴⁶³⁵ is an apocalyptic number.

64635 is a deficient number, since it is larger than the sum of its proper divisors (42885).

64635 is a wasteful number, since it uses less digits than its factorization.

64635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178.

The product of its digits is 2160, while the sum is 24.

The square root of 64635 is about 254.2341440484. The cubic root of 64635 is about 40.1318565354.

Adding to 64635 its product of digits (2160), we get a triangular number (66795 = T₃₆₅).

The spelling of 64635 in words is "sixty-four thousand, six hundred thirty-five".