135660503 has 8 divisors (see below), whose sum is σ = 148160016. Its totient is φ = 123188800.

The previous prime is 135660491. The next prime is 135660533. The reversal of 135660503 is 305066531.

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 135660503 - 2⁶ = 135660439 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 (135660533) 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, 4013 + ... + 16953.

It is an arithmetic number, because the mean of its divisors is an integer number (18520002).

Almost surely, 2^135660503 is an apocalyptic number.

135660503 is a deficient number, since it is larger than the sum of its proper divisors (12499513).

135660503 is a wasteful number, since it uses less digits than its factorization.

135660503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13905.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 135660503 is about 11647.3388806199. The cubic root of 135660503 is about 513.8280486361.

The spelling of 135660503 in words is "one hundred thirty-five million, six hundred sixty thousand, five hundred three".