68818756 has 6 divisors (see below), whose sum is σ = 120432830. Its totient is φ = 34409376.

The previous prime is 68818747. The next prime is 68818781. The reversal of 68818756 is 65781886.

It can be written as a sum of positive squares in only one way, i.e., 45778756 + 23040000 = 6766^2 + 4800^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8602341 + ... + 8602348.

Almost surely, 2^68818756 is an apocalyptic number.

It is an amenable number.

68818756 is a deficient number, since it is larger than the sum of its proper divisors (51614074).

68818756 is a wasteful number, since it uses less digits than its factorization.

68818756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17204693 (or 17204691 counting only the distinct ones).

The product of its digits is 645120, while the sum is 49.

The square root of 68818756 is about 8295.7070825819. The cubic root of 68818756 is about 409.7971552623.

The spelling of 68818756 in words is "sixty-eight million, eight hundred eighteen thousand, seven hundred fifty-six".