135686853 has 16 divisors (see below), whose sum is σ = 207950400. Its totient is φ = 87338160.

The previous prime is 135686813. The next prime is 135686857. The reversal of 135686853 is 358686531.

135686853 is a `hidden beast` number, since 1 + 3 + 568 + 6 + 85 + 3 = 666.

It is not a de Polignac number, because 135686853 - 2¹⁰ = 135685829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135686799 and 135686808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135686857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85863 + ... + 87428.

It is an arithmetic number, because the mean of its divisors is an integer number (12996900).

Almost surely, 2^135686853 is an apocalyptic number.

It is an amenable number.

135686853 is a deficient number, since it is larger than the sum of its proper divisors (72263547).

135686853 is a wasteful number, since it uses less digits than its factorization.

135686853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173329 (or 173323 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 135686853 is about 11648.4699853672. The cubic root of 135686853 is about 513.8613142569.

It can be divided in two parts, 1356 and 86853, that added together give a square (88209 = 297²).

The spelling of 135686853 in words is "one hundred thirty-five million, six hundred eighty-six thousand, eight hundred fifty-three".