79613 has 2 divisors, whose sum is σ = 79614. Its totient is φ = 79612.
The previous prime is 79609. The next prime is 79621. The reversal of 79613 is 31697.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 40804 + 38809 = 202^2 + 197^2 .
79613 is a truncatable prime.
It is a cyclic number.
It is not a de Polignac number, because 79613 - 22 = 79609 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (79633) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39806 + 39807.
It is an arithmetic number, because the mean of its divisors is an integer number (39807).
279613 is an apocalyptic number.
It is an amenable number.
79613 is a deficient number, since it is larger than the sum of its proper divisors (1).
79613 is an equidigital number, since it uses as much as digits as its factorization.
79613 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1134, while the sum is 26.
The square root of 79613 is about 282.1577572919. The cubic root of 79613 is about 43.0191009425.
The spelling of 79613 in words is "seventy-nine thousand, six hundred thirteen".
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