135906878 has 8 divisors (see below), whose sum is σ = 204556968. Its totient is φ = 67721224.

The previous prime is 135906863. The next prime is 135906919. The reversal of 135906878 is 878609531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115376 + ... + 116547.

It is an arithmetic number, because the mean of its divisors is an integer number (25569621).

Almost surely, 2^135906878 is an apocalyptic number.

135906878 is a deficient number, since it is larger than the sum of its proper divisors (68650090).

135906878 is a wasteful number, since it uses less digits than its factorization.

135906878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232218.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 135906878 is about 11657.9105331959. The cubic root of 135906878 is about 514.1389173691.

The spelling of 135906878 in words is "one hundred thirty-five million, nine hundred six thousand, eight hundred seventy-eight".