74206729 has 2 divisors, whose sum is σ = 74206730. Its totient is φ = 74206728.

The previous prime is 74206711. The next prime is 74206753. The reversal of 74206729 is 92760247.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60031504 + 14175225 = 7748^2 + 3765^2 .

It is an emirp because it is prime and its reverse (92760247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74206729 - 2⁹ = 74206217 is a prime.

It is not a weakly prime, because it can be changed into another prime (74206829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37103364 + 37103365.

It is an arithmetic number, because the mean of its divisors is an integer number (37103365).

Almost surely, 2^74206729 is an apocalyptic number.

It is an amenable number.

74206729 is a deficient number, since it is larger than the sum of its proper divisors (1).

74206729 is an equidigital number, since it uses as much as digits as its factorization.

74206729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 74206729 is about 8614.3327658037. The cubic root of 74206729 is about 420.2242358914.

The spelling of 74206729 in words is "seventy-four million, two hundred six thousand, seven hundred twenty-nine".