134935681 has 8 divisors (see below), whose sum is σ = 143665704. Its totient is φ = 126293760.

The previous prime is 134935649. The next prime is 134935699. The reversal of 134935681 is 186539431.

It can be written as a sum of positive squares in 4 ways, for example, as 4225 + 134931456 = 65^2 + 11616^2 .

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 134935681 - 2⁵ = 134935649 is a prime.

It is a super-2 number, since 2×134935681² = 36415276013867522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134935621) 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, 18850 + ... + 25003.

It is an arithmetic number, because the mean of its divisors is an integer number (17958213).

Almost surely, 2^134935681 is an apocalyptic number.

It is an amenable number.

134935681 is a deficient number, since it is larger than the sum of its proper divisors (8730023).

134935681 is a wasteful number, since it uses less digits than its factorization.

134935681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44051.

The product of its digits is 77760, while the sum is 40.

The square root of 134935681 is about 11616.1818598023. The cubic root of 134935681 is about 512.9113014739.

The spelling of 134935681 in words is "one hundred thirty-four million, nine hundred thirty-five thousand, six hundred eighty-one".