64424 has 8 divisors (see below), whose sum is σ = 120810. Its totient is φ = 32208.

The previous prime is 64403. The next prime is 64433. The reversal of 64424 is 42446.

64424 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in only one way, i.e., 47524 + 16900 = 218^2 + 130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 11.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 64396 and 64405.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4019 + ... + 4034.

2⁶⁴⁴²⁴ is an apocalyptic number.

It is an amenable number.

64424 is a deficient number, since it is larger than the sum of its proper divisors (56386).

64424 is a wasteful number, since it uses less digits than its factorization.

64424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8059 (or 8055 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 64424 is about 253.8188330286. The cubic root of 64424 is about 40.0881389787.

It can be divided in two parts, 6442 and 4, that added together give a palindrome (6446).

The spelling of 64424 in words is "sixty-four thousand, four hundred twenty-four".