79644 has 12 divisors (see below), whose sum is σ = 185864. Its totient is φ = 26544.
The previous prime is 79633. The next prime is 79657. The reversal of 79644 is 44697.
It is a tau number, because it is divible by the number of its divisors (12).
It is a congruent number.
It is an unprimeable number.
79644 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 3 ways as a sum of consecutive naturals, for example, 3307 + ... + 3330.
279644 is an apocalyptic number.
It is an amenable number.
79644 is an abundant number, since it is smaller than the sum of its proper divisors (106220).
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 (92932).
79644 is a wasteful number, since it uses less digits than its factorization.
79644 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6644 (or 6642 counting only the distinct ones).
The product of its digits is 6048, while the sum is 30.
The square root of 79644 is about 282.2126857531. The cubic root of 79644 is about 43.0246838627.
The spelling of 79644 in words is "seventy-nine thousand, six hundred forty-four".
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