135517663 has 4 divisors (see below), whose sum is σ = 135996808. Its totient is φ = 135038520.

The previous prime is 135517637. The next prime is 135517673. The reversal of 135517663 is 366715531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135517663 - 2¹⁷ = 135386591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135517673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239148 + ... + 239713.

It is an arithmetic number, because the mean of its divisors is an integer number (33999202).

Almost surely, 2^135517663 is an apocalyptic number.

135517663 is a deficient number, since it is larger than the sum of its proper divisors (479145).

135517663 is an equidigital number, since it uses as much as digits as its factorization.

135517663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479144.

The product of its digits is 56700, while the sum is 37.

The square root of 135517663 is about 11641.2053929136. The cubic root of 135517663 is about 513.6476449279.

The spelling of 135517663 in words is "one hundred thirty-five million, five hundred seventeen thousand, six hundred sixty-three".