136749 has 8 divisors (see below), whose sum is σ = 184960. Its totient is φ = 89856.
The previous prime is 136739. The next prime is 136751. The reversal of 136749 is 947631.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 136749 - 24 = 136733 is a prime.
It is a Duffinian number.
It is a plaindrome in base 5.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (136709) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52 + ... + 525.
It is an arithmetic number, because the mean of its divisors is an integer number (23120).
2136749 is an apocalyptic number.
It is an amenable number.
136749 is a deficient number, since it is larger than the sum of its proper divisors (48211).
136749 is an equidigital number, since it uses as much as digits as its factorization.
136749 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 659.
The product of its digits is 4536, while the sum is 30.
The square root of 136749 is about 369.7958896472. The cubic root of 136749 is about 51.5198654000.
The spelling of 136749 in words is "one hundred thirty-six thousand, seven hundred forty-nine".
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