64869 has 8 divisors (see below), whose sum is σ = 98880. Its totient is φ = 37056.

The previous prime is 64853. The next prime is 64871. The reversal of 64869 is 96846.

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

It is not a de Polignac number, because 64869 - 2⁴ = 64853 is a prime.

It is a super-2 number, since 2×64869² = 8415974322, which contains 22 as substring.

It is a plaindrome in base 13.

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 (64849) 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 7 ways as a sum of consecutive naturals, for example, 1524 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (12360).

2⁶⁴⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

64869 is a deficient number, since it is larger than the sum of its proper divisors (34011).

64869 is a wasteful number, since it uses less digits than its factorization.

64869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

The product of its digits is 10368, while the sum is 33.

The square root of 64869 is about 254.6939339678. The cubic root of 64869 is about 40.1802283902.

It can be divided in two parts, 648 and 69, that added together give a palindrome (717).

The spelling of 64869 in words is "sixty-four thousand, eight hundred sixty-nine".