135647671 has 4 divisors (see below), whose sum is σ = 138802312. Its totient is φ = 132493032.

The previous prime is 135647623. The next prime is 135647689. The reversal of 135647671 is 176746531.

135647671 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 135647671 - 2⁷ = 135647543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135647621) 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, 1577256 + ... + 1577341.

It is an arithmetic number, because the mean of its divisors is an integer number (34700578).

Almost surely, 2^135647671 is an apocalyptic number.

135647671 is a deficient number, since it is larger than the sum of its proper divisors (3154641).

135647671 is an equidigital number, since it uses as much as digits as its factorization.

135647671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154640.

The product of its digits is 105840, while the sum is 40.

The square root of 135647671 is about 11646.7880121517. The cubic root of 135647671 is about 513.8118472872.

The spelling of 135647671 in words is "one hundred thirty-five million, six hundred forty-seven thousand, six hundred seventy-one".