134666671 has 4 divisors (see below), whose sum is σ = 134891344. Its totient is φ = 134442000.

The previous prime is 134666663. The next prime is 134666687. The reversal of 134666671 is 176666431.

134666671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134666671 - 2³ = 134666663 is a prime.

It is a super-2 number, since 2×134666671² = 36270224556444482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134666621) 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, 111435 + ... + 112636.

It is an arithmetic number, because the mean of its divisors is an integer number (33722836).

Almost surely, 2^134666671 is an apocalyptic number.

134666671 is a deficient number, since it is larger than the sum of its proper divisors (224673).

134666671 is an equidigital number, since it uses as much as digits as its factorization.

134666671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224672.

The product of its digits is 108864, while the sum is 40.

The square root of 134666671 is about 11604.5969770604. The cubic root of 134666671 is about 512.5702252372.

The spelling of 134666671 in words is "one hundred thirty-four million, six hundred sixty-six thousand, six hundred seventy-one".