68535544 has 128 divisors (see below), whose sum is σ = 171601920. Its totient is φ = 24883200.

The previous prime is 68535499. The next prime is 68535547. The reversal of 68535544 is 44553586.

It is a junction number, because it is equal to n+sod(n) for n = 68535497 and 68535506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68535547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 706504 + ... + 706600.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^68535544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68535544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85800960).

68535544 is an abundant number, since it is smaller than the sum of its proper divisors (103066376).

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

68535544 is a wasteful number, since it uses less digits than its factorization.

68535544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 185 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

The square root of 68535544 is about 8278.6196917119. The cubic root of 68535544 is about 409.2342319575.

The spelling of 68535544 in words is "sixty-eight million, five hundred thirty-five thousand, five hundred forty-four".