135667 has 4 divisors (see below), whose sum is σ = 155056. Its totient is φ = 116280.

The previous prime is 135661. The next prime is 135671. The reversal of 135667 is 766531.

135667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135667 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10 and base 13.

It is not an unprimeable number, because it can be changed into a prime (135661) 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, 9684 + ... + 9697.

It is an arithmetic number, because the mean of its divisors is an integer number (38764).

2¹³⁵⁶⁶⁷ is an apocalyptic number.

135667 is a deficient number, since it is larger than the sum of its proper divisors (19389).

135667 is an equidigital number, since it uses as much as digits as its factorization.

135667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19388.

The product of its digits is 3780, while the sum is 28.

The square root of 135667 is about 368.3300150680. The cubic root of 135667 is about 51.3836251189.

The spelling of 135667 in words is "one hundred thirty-five thousand, six hundred sixty-seven".