135679 has 8 divisors (see below), whose sum is σ = 147440. Its totient is φ = 124416.

The previous prime is 135671. The next prime is 135697. The reversal of 135679 is 976531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 9-Lehmer number, since φ(135679) divides (135679-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 135679 - 2³ = 135671 is a prime.

It is a plaindrome in base 10 and base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 135679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (18430).

2¹³⁵⁶⁷⁹ is an apocalyptic number.

135679 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

135679 is a deficient number, since it is larger than the sum of its proper divisors (11761).

135679 is a wasteful number, since it uses less digits than its factorization.

135679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its digits is 5670, while the sum is 31.

The square root of 135679 is about 368.3463044473. The cubic root of 135679 is about 51.3851400669.

The spelling of 135679 in words is "one hundred thirty-five thousand, six hundred seventy-nine".