64866 has 16 divisors (see below), whose sum is σ = 136800. Its totient is φ = 20448.

The previous prime is 64853. The next prime is 64871. The reversal of 64866 is 66846.

It is a happy number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is an unprimeable number.

64866 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171 + ... + 398.

It is an arithmetic number, because the mean of its divisors is an integer number (8550).

2⁶⁴⁸⁶⁶ is an apocalyptic number.

64866 is an abundant number, since it is smaller than the sum of its proper divisors (71934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68400).

64866 is a wasteful number, since it uses less digits than its factorization.

64866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593.

The product of its digits is 6912, while the sum is 30.

The square root of 64866 is about 254.6880444779. The cubic root of 64866 is about 40.1796089750.

The spelling of 64866 in words is "sixty-four thousand, eight hundred sixty-six".