135268947 has 20 divisors (see below), whose sum is σ = 220439736. Its totient is φ = 81980640.

The previous prime is 135268943. The next prime is 135268951. The reversal of 135268947 is 749862531.

135268947 is a `hidden beast` number, since 1 + 3 + 526 + 89 + 47 = 666.

It is an interprime number because it is at equal distance from previous prime (135268943) and next prime (135268951).

It is not a de Polignac number, because 135268947 - 2² = 135268943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135268943) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75018 + ... + 76799.

Almost surely, 2^135268947 is an apocalyptic number.

135268947 is a deficient number, since it is larger than the sum of its proper divisors (85170789).

135268947 is a wasteful number, since it uses less digits than its factorization.

135268947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151840 (or 151831 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 135268947 is about 11630.5179162409. The cubic root of 135268947 is about 513.3332194393. Note that the first 3 decimals are identical.

The spelling of 135268947 in words is "one hundred thirty-five million, two hundred sixty-eight thousand, nine hundred forty-seven".