135147668 has 12 divisors (see below), whose sum is σ = 240971220. Its totient is φ = 66298752.

The previous prime is 135147659. The next prime is 135147673. The reversal of 135147668 is 866741531.

It can be written as a sum of positive squares in 2 ways, for example, as 101646724 + 33500944 = 10082^2 + 5788^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318533 + ... + 318956.

It is an arithmetic number, because the mean of its divisors is an integer number (20080935).

Almost surely, 2^135147668 is an apocalyptic number.

It is an amenable number.

135147668 is a deficient number, since it is larger than the sum of its proper divisors (105823552).

135147668 is a wasteful number, since it uses less digits than its factorization.

135147668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637546 (or 637544 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 135147668 is about 11625.3029207845. The cubic root of 135147668 is about 513.1797593483.

The spelling of 135147668 in words is "one hundred thirty-five million, one hundred forty-seven thousand, six hundred sixty-eight".