67241729 has 2 divisors, whose sum is σ = 67241730. Its totient is φ = 67241728.

The previous prime is 67241717. The next prime is 67241753. The reversal of 67241729 is 92714276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60481729 + 6760000 = 7777^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 67241729 - 2¹² = 67237633 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 67241692 and 67241701.

It is not a weakly prime, because it can be changed into another prime (67241329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33620864 + 33620865.

It is an arithmetic number, because the mean of its divisors is an integer number (33620865).

Almost surely, 2^67241729 is an apocalyptic number.

It is an amenable number.

67241729 is a deficient number, since it is larger than the sum of its proper divisors (1).

67241729 is an equidigital number, since it uses as much as digits as its factorization.

67241729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 67241729 is about 8200.1054261515. The cubic root of 67241729 is about 406.6426784949.

The spelling of 67241729 in words is "sixty-seven million, two hundred forty-one thousand, seven hundred twenty-nine".