68544436 has 12 divisors (see below), whose sum is σ = 120131200. Its totient is φ = 34221240.

The previous prime is 68544433. The next prime is 68544449. The reversal of 68544436 is 63444586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68544433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9636 + ... + 15163.

Almost surely, 2^68544436 is an apocalyptic number.

It is an amenable number.

68544436 is a deficient number, since it is larger than the sum of its proper divisors (51586764).

68544436 is a wasteful number, since it uses less digits than its factorization.

68544436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25494 (or 25492 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

The square root of 68544436 is about 8279.1567203430. The cubic root of 68544436 is about 409.2519296037.

The spelling of 68544436 in words is "sixty-eight million, five hundred forty-four thousand, four hundred thirty-six".