68166629 has 2 divisors, whose sum is σ = 68166630. Its totient is φ = 68166628.

The previous prime is 68166607. The next prime is 68166643. The reversal of 68166629 is 92666186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36784225 + 31382404 = 6065^2 + 5602^2 .

It is a cyclic number.

It is not a de Polignac number, because 68166629 - 2²⁰ = 67118053 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68166629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68166649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34083314 + 34083315.

It is an arithmetic number, because the mean of its divisors is an integer number (34083315).

Almost surely, 2^68166629 is an apocalyptic number.

It is an amenable number.

68166629 is a deficient number, since it is larger than the sum of its proper divisors (1).

68166629 is an equidigital number, since it uses as much as digits as its factorization.

68166629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 68166629 is about 8256.3084365835. The cubic root of 68166629 is about 408.4986314335.

The spelling of 68166629 in words is "sixty-eight million, one hundred sixty-six thousand, six hundred twenty-nine".