64444 has 6 divisors (see below), whose sum is σ = 112784. Its totient is φ = 32220.
The previous prime is 64439. The next prime is 64451. The reversal of 64444 is 44446.
It is a happy number.
64444 is a modest number, since divided by 444 gives 64 as remainder.
It is a plaindrome in base 11.
It is a nialpdrome in base 10.
It is a zygodrome in base 11.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8052 + ... + 8059.
264444 is an apocalyptic number.
It is an amenable number.
64444 is a deficient number, since it is larger than the sum of its proper divisors (48340).
64444 is a wasteful number, since it uses less digits than its factorization.
64444 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16115 (or 16113 counting only the distinct ones).
The product of its digits is 1536, while the sum is 22.
The square root of 64444 is about 253.8582281511. The cubic root of 64444 is about 40.0922869144.
The spelling of 64444 in words is "sixty-four thousand, four hundred forty-four".
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