135605651 has 8 divisors (see below), whose sum is σ = 145197360. Its totient is φ = 126193408.

The previous prime is 135605611. The next prime is 135605663. The reversal of 135605651 is 156506531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135605651 - 2²² = 131411347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135605611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43301 + ... + 46326.

It is an arithmetic number, because the mean of its divisors is an integer number (18149670).

Almost surely, 2^135605651 is an apocalyptic number.

135605651 is a deficient number, since it is larger than the sum of its proper divisors (9591709).

135605651 is an equidigital number, since it uses as much as digits as its factorization.

135605651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89733.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 135605651 is about 11644.9839415948. The cubic root of 135605651 is about 513.7587867777.

The spelling of 135605651 in words is "one hundred thirty-five million, six hundred five thousand, six hundred fifty-one".