68363136 has 128 divisors (see below), whose sum is σ = 204652800. Its totient is φ = 22464000.

The previous prime is 68363129. The next prime is 68363173. The reversal of 68363136 is 63136386.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 68363136.

It is a congruent 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, 452661 + ... + 452811.

It is an arithmetic number, because the mean of its divisors is an integer number (1598850).

Almost surely, 2^68363136 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 68363136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102326400).

68363136 is an abundant number, since it is smaller than the sum of its proper divisors (136289664).

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

68363136 is a wasteful number, since it uses less digits than its factorization.

68363136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 287 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 68363136 is about 8268.2002878498. The cubic root of 68363136 is about 408.8907872908.

The spelling of 68363136 in words is "sixty-eight million, three hundred sixty-three thousand, one hundred thirty-six".