67825729 has 2 divisors, whose sum is σ = 67825730. Its totient is φ = 67825728.

The previous prime is 67825627. The next prime is 67825741. The reversal of 67825729 is 92752876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46895104 + 20930625 = 6848^2 + 4575^2 .

It is a cyclic number.

It is not a de Polignac number, because 67825729 - 2¹⁵ = 67792961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67825789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33912864 + 33912865.

It is an arithmetic number, because the mean of its divisors is an integer number (33912865).

Almost surely, 2^67825729 is an apocalyptic number.

It is an amenable number.

67825729 is a deficient number, since it is larger than the sum of its proper divisors (1).

67825729 is an equidigital number, since it uses as much as digits as its factorization.

67825729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 46.

The square root of 67825729 is about 8235.6377409403. The cubic root of 67825729 is about 407.8165285070.

The spelling of 67825729 in words is "sixty-seven million, eight hundred twenty-five thousand, seven hundred twenty-nine".