64422 has 16 divisors (see below), whose sum is σ = 143280. Its totient is φ = 21456.

The previous prime is 64403. The next prime is 64433. The reversal of 64422 is 22446.

64422 is a `hidden beast` number, since 644 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 11.

It is a nialpdrome in base 10 and base 16.

It is a junction number, because it is equal to n+sod(n) for n = 64395 and 64404.

It is a congruent number.

It is an unprimeable number.

64422 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 543 + ... + 650.

It is an arithmetic number, because the mean of its divisors is an integer number (8955).

2⁶⁴⁴²² is an apocalyptic number.

64422 is an abundant number, since it is smaller than the sum of its proper divisors (78858).

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 (71640).

64422 is a wasteful number, since it uses less digits than its factorization.

64422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1198 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 64422 is about 253.8148931800. The cubic root of 64422 is about 40.0877241379.

Adding to 64422 its reverse (22446), we get a palindrome (86868).

It can be divided in two parts, 644 and 22, that added together give a palindrome (666).

The spelling of 64422 in words is "sixty-four thousand, four hundred twenty-two".