64945 has 8 divisors (see below), whose sum is σ = 80640. Its totient is φ = 50160.

The previous prime is 64937. The next prime is 64951. The reversal of 64945 is 54946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64945 - 2³ = 64937 is a prime.

It is a nialpdrome in base 16.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 55 + ... + 364.

It is an arithmetic number, because the mean of its divisors is an integer number (10080).

2⁶⁴⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

64945 is a deficient number, since it is larger than the sum of its proper divisors (15695).

64945 is a wasteful number, since it uses less digits than its factorization.

64945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its digits is 4320, while the sum is 28.

The square root of 64945 is about 254.8430889783. The cubic root of 64945 is about 40.1959138772.

Subtracting from 64945 its reverse (54946), we obtain a palindrome (9999).

The spelling of 64945 in words is "sixty-four thousand, nine hundred forty-five".