68356349 has 2 divisors, whose sum is σ = 68356350. Its totient is φ = 68356348.

The previous prime is 68356339. The next prime is 68356367. The reversal of 68356349 is 94365386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 4644025 = 7982^2 + 2155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68356349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68356339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34178174 + 34178175.

It is an arithmetic number, because the mean of its divisors is an integer number (34178175).

Almost surely, 2^68356349 is an apocalyptic number.

It is an amenable number.

68356349 is a deficient number, since it is larger than the sum of its proper divisors (1).

68356349 is an equidigital number, since it uses as much as digits as its factorization.

68356349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The square root of 68356349 is about 8267.7898497724. The cubic root of 68356349 is about 408.8772554675.

The spelling of 68356349 in words is "sixty-eight million, three hundred fifty-six thousand, three hundred forty-nine".