135780687 has 24 divisors (see below), whose sum is σ = 226141344. Its totient is φ = 76898304.

The previous prime is 135780679. The next prime is 135780703. The reversal of 135780687 is 786087531.

135780687 is a `hidden beast` number, since 13 + 578 + 0 + 68 + 7 = 666.

It is not a de Polignac number, because 135780687 - 2³ = 135780679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135781687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2418 + ... + 16655.

It is an arithmetic number, because the mean of its divisors is an integer number (9422556).

Almost surely, 2^135780687 is an apocalyptic number.

135780687 is a deficient number, since it is larger than the sum of its proper divisors (90360657).

135780687 is a wasteful number, since it uses less digits than its factorization.

135780687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19199 (or 19196 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 135780687 is about 11652.4970285343. The cubic root of 135780687 is about 513.9797402523.

The spelling of 135780687 in words is "one hundred thirty-five million, seven hundred eighty thousand, six hundred eighty-seven".