68843136 has 64 divisors (see below), whose sum is σ = 185925600. Its totient is φ = 22563840.

The previous prime is 68843123. The next prime is 68843153. The reversal of 68843136 is 63134886.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is a junction number, because it is equal to n+sod(n) for n = 68843094 and 68843103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21955 + ... + 24893.

Almost surely, 2^68843136 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 68843136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92962800).

68843136 is an abundant number, since it is smaller than the sum of its proper divisors (117082464).

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

68843136 is a wasteful number, since it uses less digits than its factorization.

68843136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017 (or 3005 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 68843136 is about 8297.1763871814. The cubic root of 68843136 is about 409.8455416599.

The spelling of 68843136 in words is "sixty-eight million, eight hundred forty-three thousand, one hundred thirty-six".