678135117 has 16 divisors (see below), whose sum is σ = 1044401472. Its totient is φ = 386814720.

The previous prime is 678135091. The next prime is 678135119. The reversal of 678135117 is 711531876.

It is not a de Polignac number, because 678135117 - 2⁸ = 678134861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678135119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603838 + ... + 604959.

It is an arithmetic number, because the mean of its divisors is an integer number (65275092).

Almost surely, 2^678135117 is an apocalyptic number.

It is an amenable number.

678135117 is a deficient number, since it is larger than the sum of its proper divisors (366266355).

678135117 is a wasteful number, since it uses less digits than its factorization.

678135117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208828.

The product of its digits is 35280, while the sum is 39.

The square root of 678135117 is about 26041.0275718912. The cubic root of 678135117 is about 878.5613187396.

The spelling of 678135117 in words is "six hundred seventy-eight million, one hundred thirty-five thousand, one hundred seventeen".