135783506 has 4 divisors (see below), whose sum is σ = 203675262. Its totient is φ = 67891752.

The previous prime is 135783457. The next prime is 135783511. The reversal of 135783506 is 605387531.

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

It can be written as a sum of positive squares in only one way, i.e., 91680625 + 44102881 = 9575^2 + 6641^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135783506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33945875 + ... + 33945878.

Almost surely, 2^135783506 is an apocalyptic number.

135783506 is a deficient number, since it is larger than the sum of its proper divisors (67891756).

135783506 is an equidigital number, since it uses as much as digits as its factorization.

135783506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67891755.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 135783506 is about 11652.6179891044. The cubic root of 135783506 is about 513.9832972109.

The spelling of 135783506 in words is "one hundred thirty-five million, seven hundred eighty-three thousand, five hundred six".