68518304 has 12 divisors (see below), whose sum is σ = 134895474. Its totient is φ = 34259136.

The previous prime is 68518301. The next prime is 68518309. The reversal of 68518304 is 40381586.

It can be written as a sum of positive squares in only one way, i.e., 61653904 + 6864400 = 7852^2 + 2620^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68518301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070567 + ... + 1070630.

Almost surely, 2^68518304 is an apocalyptic number.

It is an amenable number.

68518304 is a deficient number, since it is larger than the sum of its proper divisors (66377170).

68518304 is a wasteful number, since it uses less digits than its factorization.

68518304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141207 (or 2141199 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68518304 is about 8277.5783898433. The cubic root of 68518304 is about 409.1999150207.

The spelling of 68518304 in words is "sixty-eight million, five hundred eighteen thousand, three hundred four".