135669478 has 16 divisors (see below), whose sum is σ = 235764000. Its totient is φ = 57347136.

The previous prime is 135669467. The next prime is 135669517. The reversal of 135669478 is 874966531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65353 + ... + 67396.

It is an arithmetic number, because the mean of its divisors is an integer number (14735250).

Almost surely, 2^135669478 is an apocalyptic number.

135669478 is a deficient number, since it is larger than the sum of its proper divisors (100094522).

135669478 is a wasteful number, since it uses less digits than its factorization.

135669478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132831.

The product of its digits is 1088640, while the sum is 49.

The square root of 135669478 is about 11647.7241553876. The cubic root of 135669478 is about 513.8393796301.

The spelling of 135669478 in words is "one hundred thirty-five million, six hundred sixty-nine thousand, four hundred seventy-eight".