134608561 has 4 divisors (see below), whose sum is σ = 136617712. Its totient is φ = 132599412.

The previous prime is 134608531. The next prime is 134608571. The reversal of 134608561 is 165806431.

It is a happy number.

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: 165806431 = 7 ⋅23686633.

It is a cyclic number.

It is not a de Polignac number, because 134608561 - 2¹³ = 134600369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134608531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004475 + ... + 1004608.

It is an arithmetic number, because the mean of its divisors is an integer number (34154428).

Almost surely, 2^134608561 is an apocalyptic number.

It is an amenable number.

134608561 is a deficient number, since it is larger than the sum of its proper divisors (2009151).

134608561 is an equidigital number, since it uses as much as digits as its factorization.

134608561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009150.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 134608561 is about 11602.0929577383. The cubic root of 134608561 is about 512.4964882567.

The spelling of 134608561 in words is "one hundred thirty-four million, six hundred eight thousand, five hundred sixty-one".