68670029 has 2 divisors, whose sum is σ = 68670030. Its totient is φ = 68670028.

The previous prime is 68670023. The next prime is 68670037. The reversal of 68670029 is 92007686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50197225 + 18472804 = 7085^2 + 4298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68670029 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68669974 and 68670001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68670023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34335014 + 34335015.

It is an arithmetic number, because the mean of its divisors is an integer number (34335015).

Almost surely, 2^68670029 is an apocalyptic number.

It is an amenable number.

68670029 is a deficient number, since it is larger than the sum of its proper divisors (1).

68670029 is an equidigital number, since it uses as much as digits as its factorization.

68670029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 68670029 is about 8286.7381399438. The cubic root of 68670029 is about 409.5017326019.

The spelling of 68670029 in words is "sixty-eight million, six hundred seventy thousand, twenty-nine".