135508747 has 6 divisors (see below), whose sum is σ = 148947764. Its totient is φ = 123189660.

The previous prime is 135508729. The next prime is 135508783. The reversal of 135508747 is 747805531.

It is not a de Polignac number, because 135508747 - 2¹¹ = 135506699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135508787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559833 + ... + 560074.

Almost surely, 2^135508747 is an apocalyptic number.

135508747 is a deficient number, since it is larger than the sum of its proper divisors (13439017).

135508747 is a wasteful number, since it uses less digits than its factorization.

135508747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119929 (or 1119918 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 135508747 is about 11640.8224365807. The cubic root of 135508747 is about 513.6363800179.

The spelling of 135508747 in words is "one hundred thirty-five million, five hundred eight thousand, seven hundred forty-seven".