68345357 has 2 divisors, whose sum is σ = 68345358. Its totient is φ = 68345356.

The previous prime is 68345323. The next prime is 68345363. The reversal of 68345357 is 75354386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63027721 + 5317636 = 7939^2 + 2306^2 .

It is a cyclic number.

It is not a de Polignac number, because 68345357 - 2¹² = 68341261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68345317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34172678 + 34172679.

It is an arithmetic number, because the mean of its divisors is an integer number (34172679).

Almost surely, 2^68345357 is an apocalyptic number.

It is an amenable number.

68345357 is a deficient number, since it is larger than the sum of its proper divisors (1).

68345357 is an equidigital number, since it uses as much as digits as its factorization.

68345357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

The square root of 68345357 is about 8267.1250746556. The cubic root of 68345357 is about 408.8553378755.

The spelling of 68345357 in words is "sixty-eight million, three hundred forty-five thousand, three hundred fifty-seven".