68018897 has 2 divisors, whose sum is σ = 68018898. Its totient is φ = 68018896.

The previous prime is 68018893. The next prime is 68018911. The reversal of 68018897 is 79881086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66569281 + 1449616 = 8159^2 + 1204^2 .

It is a cyclic number.

It is not a de Polignac number, because 68018897 - 2² = 68018893 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68018893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34009448 + 34009449.

It is an arithmetic number, because the mean of its divisors is an integer number (34009449).

Almost surely, 2^68018897 is an apocalyptic number.

It is an amenable number.

68018897 is a deficient number, since it is larger than the sum of its proper divisors (1).

68018897 is an equidigital number, since it uses as much as digits as its factorization.

68018897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 68018897 is about 8247.3569705694. The cubic root of 68018897 is about 408.2033160215.

The spelling of 68018897 in words is "sixty-eight million, eighteen thousand, eight hundred ninety-seven".