134980561 has 8 divisors (see below), whose sum is σ = 143869824. Its totient is φ = 126196800.

The previous prime is 134980543. The next prime is 134980591. The reversal of 134980561 is 165089431.

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 134980561 - 2⁹ = 134980049 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 134980561.

It is not an unprimeable number, because it can be changed into a prime (134980591) 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, 23725 + ... + 28858.

It is an arithmetic number, because the mean of its divisors is an integer number (17983728).

Almost surely, 2^134980561 is an apocalyptic number.

It is an amenable number.

134980561 is a deficient number, since it is larger than the sum of its proper divisors (8889263).

134980561 is a wasteful number, since it uses less digits than its factorization.

134980561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52751.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 134980561 is about 11618.1134871372. The cubic root of 134980561 is about 512.9681604341.

The spelling of 134980561 in words is "one hundred thirty-four million, nine hundred eighty thousand, five hundred sixty-one".