68055149 has 2 divisors, whose sum is σ = 68055150. Its totient is φ = 68055148.

The previous prime is 68055139. The next prime is 68055157. The reversal of 68055149 is 94155086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62125924 + 5929225 = 7882^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 68055149 - 2²⁰ = 67006573 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 (68055139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34027574 + 34027575.

It is an arithmetic number, because the mean of its divisors is an integer number (34027575).

Almost surely, 2^68055149 is an apocalyptic number.

It is an amenable number.

68055149 is a deficient number, since it is larger than the sum of its proper divisors (1).

68055149 is an equidigital number, since it uses as much as digits as its factorization.

68055149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 68055149 is about 8249.5544728185. The cubic root of 68055149 is about 408.2758231190.

The spelling of 68055149 in words is "sixty-eight million, fifty-five thousand, one hundred forty-nine".