136613 has 4 divisors (see below), whose sum is σ = 138720. Its totient is φ = 134508.
The previous prime is 136607. The next prime is 136621. The reversal of 136613 is 316631.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316631 = 7 ⋅45233.
It is a cyclic number.
It is not a de Polignac number, because 136613 - 210 = 135589 is a prime.
It is a super-2 number, since 2×1366132 = 37326223538, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (136603) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953 + ... + 1086.
It is an arithmetic number, because the mean of its divisors is an integer number (34680).
2136613 is an apocalyptic number.
It is an amenable number.
136613 is a deficient number, since it is larger than the sum of its proper divisors (2107).
136613 is an equidigital number, since it uses as much as digits as its factorization.
136613 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2106.
The product of its digits is 324, while the sum is 20.
The square root of 136613 is about 369.6119586810. The cubic root of 136613 is about 51.5027805078.
The spelling of 136613 in words is "one hundred thirty-six thousand, six hundred thirteen".
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