134691 has 16 divisors (see below), whose sum is σ = 201600. Its totient is φ = 79488.

The previous prime is 134683. The next prime is 134699. The reversal of 134691 is 196431.

It is an interprime number because it is at equal distance from previous prime (134683) and next prime (134699).

It is not a de Polignac number, because 134691 - 2³ = 134683 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 134691.

It is not an unprimeable number, because it can be changed into a prime (134699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900 + ... + 1038.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2¹³⁴⁶⁹¹ is an apocalyptic number.

134691 is a deficient number, since it is larger than the sum of its proper divisors (66909).

134691 is a wasteful number, since it uses less digits than its factorization.

134691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its digits is 648, while the sum is 24.

The square root of 134691 is about 367.0027247855. The cubic root of 134691 is about 51.2601090509.

The spelling of 134691 in words is "one hundred thirty-four thousand, six hundred ninety-one".