73566529 has 2 divisors, whose sum is σ = 73566530. Its totient is φ = 73566528.

The previous prime is 73566527. The next prime is 73566539. The reversal of 73566529 is 92566537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73564929 + 1600 = 8577^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 73566529 - 2¹ = 73566527 is a prime.

Together with 73566527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73566523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36783264 + 36783265.

It is an arithmetic number, because the mean of its divisors is an integer number (36783265).

Almost surely, 2^73566529 is an apocalyptic number.

It is an amenable number.

73566529 is a deficient number, since it is larger than the sum of its proper divisors (1).

73566529 is an equidigital number, since it uses as much as digits as its factorization.

73566529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 43.

The square root of 73566529 is about 8577.0932721989. The cubic root of 73566529 is about 419.0122840690.

The spelling of 73566529 in words is "seventy-three million, five hundred sixty-six thousand, five hundred twenty-nine".