135668358 has 108 divisors (see below), whose sum is σ = 356755932. Its totient is φ = 38578680.

The previous prime is 135668333. The next prime is 135668363. The reversal of 135668358 is 853866531.

135668358 is a `hidden beast` number, since 1 + 3 + 566 + 83 + 5 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 642873 + ... + 643083.

Almost surely, 2^135668358 is an apocalyptic number.

135668358 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 135668358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178377966).

135668358 is an abundant number, since it is smaller than the sum of its proper divisors (221087574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135668358 is an frugal number, since it uses more digits than its factorization.

135668358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 223 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 135668358 is about 11647.6760772267. The cubic root of 135668358 is about 513.8379656503.

The spelling of 135668358 in words is "one hundred thirty-five million, six hundred sixty-eight thousand, three hundred fifty-eight".