68547818 has 12 divisors (see below), whose sum is σ = 105395910. Its totient is φ = 33436320.

The previous prime is 68547779. The next prime is 68547823. The reversal of 68547818 is 81874586.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 42159049 + 26388769 = 6493^2 + 5137^2 .

It is a super-2 number, since 2×68547818² = 9397606705122248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6833 + ... + 13556.

Almost surely, 2^68547818 is an apocalyptic number.

68547818 is a deficient number, since it is larger than the sum of its proper divisors (36848092).

68547818 is a wasteful number, since it uses less digits than its factorization.

68547818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20473 (or 20432 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The square root of 68547818 is about 8279.3609656785. The cubic root of 68547818 is about 409.2586603580.

The spelling of 68547818 in words is "sixty-eight million, five hundred forty-seven thousand, eight hundred eighteen".