64965 has 16 divisors (see below), whose sum is σ = 107136. Its totient is φ = 33600.

The previous prime is 64951. The next prime is 64969. The reversal of 64965 is 56946.

It is not a de Polignac number, because 64965 - 2⁶ = 64901 is a prime.

It is a plaindrome in base 11.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64969) 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 15 ways as a sum of consecutive naturals, for example, 880 + ... + 950.

It is an arithmetic number, because the mean of its divisors is an integer number (6696).

2⁶⁴⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

64965 is a deficient number, since it is larger than the sum of its proper divisors (42171).

64965 is a wasteful number, since it uses less digits than its factorization.

64965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its digits is 6480, while the sum is 30.

The square root of 64965 is about 254.8823257898. The cubic root of 64965 is about 40.2000396029.

Subtracting from 64965 its product of digits (6480), we obtain a palindrome (58485).

The spelling of 64965 in words is "sixty-four thousand, nine hundred sixty-five".