134836561 has 8 divisors (see below), whose sum is σ = 137911680. Its totient is φ = 131770128.

The previous prime is 134836553. The next prime is 134836567. The reversal of 134836561 is 165638431.

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

It is a cyclic number.

It is not a de Polignac number, because 134836561 - 2³ = 134836553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134836561.

It is not an unprimeable number, because it can be changed into a prime (134836567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37135 + ... + 40603.

It is an arithmetic number, because the mean of its divisors is an integer number (17238960).

Almost surely, 2^134836561 is an apocalyptic number.

It is an amenable number.

134836561 is a deficient number, since it is larger than the sum of its proper divisors (3075119).

134836561 is an equidigital number, since it uses as much as digits as its factorization.

134836561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343.

The product of its digits is 51840, while the sum is 37.

The square root of 134836561 is about 11611.9146138783. The cubic root of 134836561 is about 512.7856805820.

The spelling of 134836561 in words is "one hundred thirty-four million, eight hundred thirty-six thousand, five hundred sixty-one".