135853665 has 32 divisors (see below), whose sum is σ = 220582656. Its totient is φ = 71393280.

The previous prime is 135853651. The next prime is 135853691. The reversal of 135853665 is 566358531.

It is a happy number.

It is not a de Polignac number, because 135853665 - 2¹³ = 135845473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 483325 + ... + 483605.

It is an arithmetic number, because the mean of its divisors is an integer number (6893208).

Almost surely, 2^135853665 is an apocalyptic number.

135853665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135853665 is a deficient number, since it is larger than the sum of its proper divisors (84728991).

135853665 is a wasteful number, since it uses less digits than its factorization.

135853665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its digits is 324000, while the sum is 42.

The square root of 135853665 is about 11655.6280397068. The cubic root of 135853665 is about 514.0718065991.

The spelling of 135853665 in words is "one hundred thirty-five million, eight hundred fifty-three thousand, six hundred sixty-five".