64442 has 8 divisors (see below), whose sum is σ = 110496. Its totient is φ = 27612.

The previous prime is 64439. The next prime is 64451. The reversal of 64442 is 24446.

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

It is a nialpdrome in base 10 and base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (13812).

2⁶⁴⁴⁴² is an apocalyptic number.

64442 is a deficient number, since it is larger than the sum of its proper divisors (46054).

64442 is a wasteful number, since it uses less digits than its factorization.

64442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612.

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

The square root of 64442 is about 253.8542889139. The cubic root of 64442 is about 40.0918721594.

Adding to 64442 its reverse (24446), we get a palindrome (88888).

It can be divided in two parts, 6444 and 2, that added together give a palindrome (6446).

The spelling of 64442 in words is "sixty-four thousand, four hundred forty-two".