135806656 has 14 divisors (see below), whose sum is σ = 269491460. Its totient is φ = 67903296.

The previous prime is 135806621. The next prime is 135806701. The reversal of 135806656 is 656608531.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060926 + ... + 1061053.

It is an arithmetic number, because the mean of its divisors is an integer number (19249390).

Almost surely, 2^135806656 is an apocalyptic number.

135806656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135806656 is a deficient number, since it is larger than the sum of its proper divisors (133684804).

135806656 is an equidigital number, since it uses as much as digits as its factorization.

135806656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121991 (or 2121981 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 135806656 is about 11653.6112857775. The cubic root of 135806656 is about 514.0125055626.

The spelling of 135806656 in words is "one hundred thirty-five million, eight hundred six thousand, six hundred fifty-six".