68135634 has 128 divisors (see below), whose sum is σ = 186624000. Its totient is φ = 17993664.

The previous prime is 68135623. The next prime is 68135657. The reversal of 68135634 is 43653186.

68135634 is a `hidden beast` number, since 6 + 8 + 13 + 5 + 634 = 666.

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 63 ways as a sum of consecutive naturals, for example, 380557 + ... + 380735.

It is an arithmetic number, because the mean of its divisors is an integer number (1458000).

Almost surely, 2^68135634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68135634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93312000).

68135634 is an abundant number, since it is smaller than the sum of its proper divisors (118488366).

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

68135634 is a wasteful number, since it uses less digits than its factorization.

68135634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 263 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 68135634 is about 8254.4311736182. The cubic root of 68135634 is about 408.4367080028.

It can be divided in two parts, 681 and 35634, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 68135634 in words is "sixty-eight million, one hundred thirty-five thousand, six hundred thirty-four".