68539712 has 14 divisors (see below), whose sum is σ = 136008618. Its totient is φ = 34269824.

The previous prime is 68539697. The next prime is 68539781. The reversal of 68539712 is 21793586.

It can be written as a sum of positive squares in only one way, i.e., 68293696 + 246016 = 8264^2 + 496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68539712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535403 + ... + 535530.

Almost surely, 2^68539712 is an apocalyptic number.

It is an amenable number.

68539712 is a deficient number, since it is larger than the sum of its proper divisors (67468906).

68539712 is a wasteful number, since it uses less digits than its factorization.

68539712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070945 (or 1070935 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 68539712 is about 8278.8714206708. The cubic root of 68539712 is about 409.2425276710.

The spelling of 68539712 in words is "sixty-eight million, five hundred thirty-nine thousand, seven hundred twelve".