135606693 has 4 divisors (see below), whose sum is σ = 180808928. Its totient is φ = 90404460.

The previous prime is 135606673. The next prime is 135606707. The reversal of 135606693 is 396606531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 396606531 = 3 ⋅132202177.

It is not a de Polignac number, because 135606693 - 2⁸ = 135606437 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 (135606673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22601113 + ... + 22601118.

It is an arithmetic number, because the mean of its divisors is an integer number (45202232).

Almost surely, 2^135606693 is an apocalyptic number.

It is an amenable number.

135606693 is a deficient number, since it is larger than the sum of its proper divisors (45202235).

135606693 is an equidigital number, since it uses as much as digits as its factorization.

135606693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45202234.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 135606693 is about 11645.0286818024. The cubic root of 135606693 is about 513.7601026897.

The spelling of 135606693 in words is "one hundred thirty-five million, six hundred six thousand, six hundred ninety-three".