68739149 has 2 divisors, whose sum is σ = 68739150. Its totient is φ = 68739148.

The previous prime is 68739137. The next prime is 68739161. The reversal of 68739149 is 94193786.

It is a balanced prime because it is at equal distance from previous prime (68739137) and next prime (68739161).

It can be written as a sum of positive squares in only one way, i.e., 67947049 + 792100 = 8243^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 68739149 - 2⁴ = 68739133 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 (68739049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34369574 + 34369575.

It is an arithmetic number, because the mean of its divisors is an integer number (34369575).

Almost surely, 2^68739149 is an apocalyptic number.

It is an amenable number.

68739149 is a deficient number, since it is larger than the sum of its proper divisors (1).

68739149 is an equidigital number, since it uses as much as digits as its factorization.

68739149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 68739149 is about 8290.9076101474. The cubic root of 68739149 is about 409.6390815479.

The spelling of 68739149 in words is "sixty-eight million, seven hundred thirty-nine thousand, one hundred forty-nine".