68388377 has 2 divisors, whose sum is σ = 68388378. Its totient is φ = 68388376.

The previous prime is 68388373. The next prime is 68388389. The reversal of 68388377 is 77388386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61011721 + 7376656 = 7811^2 + 2716^2 .

It is a cyclic number.

It is not a de Polignac number, because 68388377 - 2² = 68388373 is a prime.

It is a super-3 number, since 3×68388377³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68388373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34194188 + 34194189.

It is an arithmetic number, because the mean of its divisors is an integer number (34194189).

Almost surely, 2^68388377 is an apocalyptic number.

It is an amenable number.

68388377 is a deficient number, since it is larger than the sum of its proper divisors (1).

68388377 is an equidigital number, since it uses as much as digits as its factorization.

68388377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 50.

The square root of 68388377 is about 8269.7265371958. The cubic root of 68388377 is about 408.9411045768.

Subtracting 68388377 from its reverse (77388386), we obtain a palindrome (9000009).

The spelling of 68388377 in words is "sixty-eight million, three hundred eighty-eight thousand, three hundred seventy-seven".