68165544 has 64 divisors (see below), whose sum is σ = 181123200. Its totient is φ = 21337344.

The previous prime is 68165533. The next prime is 68165561. The reversal of 68165544 is 44556186.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24429 + ... + 27075.

It is an arithmetic number, because the mean of its divisors is an integer number (2830050).

Almost surely, 2^68165544 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 68165544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90561600).

68165544 is an abundant number, since it is smaller than the sum of its proper divisors (112957656).

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

68165544 is a wasteful number, since it uses less digits than its factorization.

68165544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2718 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 68165544 is about 8256.2427289900. The cubic root of 68165544 is about 408.4964640809.

The spelling of 68165544 in words is "sixty-eight million, one hundred sixty-five thousand, five hundred forty-four".