134689613 has 4 divisors (see below), whose sum is σ = 141778560. Its totient is φ = 127600668.

The previous prime is 134689579. The next prime is 134689619. The reversal of 134689613 is 316986431.

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: 316986431 = 1009 ⋅314159.

It is a cyclic number.

It is not a de Polignac number, because 134689613 - 2²⁴ = 117912397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134689619) 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, 3544445 + ... + 3544482.

It is an arithmetic number, because the mean of its divisors is an integer number (35444640).

Almost surely, 2^134689613 is an apocalyptic number.

It is an amenable number.

134689613 is a deficient number, since it is larger than the sum of its proper divisors (7088947).

134689613 is an equidigital number, since it uses as much as digits as its factorization.

134689613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7088946.

The product of its digits is 93312, while the sum is 41.

The square root of 134689613 is about 11605.5854225455. The cubic root of 134689613 is about 512.5993309748.

The spelling of 134689613 in words is "one hundred thirty-four million, six hundred eighty-nine thousand, six hundred thirteen".