73075609 has 2 divisors, whose sum is σ = 73075610. Its totient is φ = 73075608.

The previous prime is 73075601. The next prime is 73075633. The reversal of 73075609 is 90657037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61152400 + 11923209 = 7820^2 + 3453^2 .

It is a cyclic number.

It is not a de Polignac number, because 73075609 - 2³ = 73075601 is a prime.

It is equal to p_4288258 and since 73075609 and 4288258 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (73075601) 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, 36537804 + 36537805.

It is an arithmetic number, because the mean of its divisors is an integer number (36537805).

Almost surely, 2^73075609 is an apocalyptic number.

It is an amenable number.

73075609 is a deficient number, since it is larger than the sum of its proper divisors (1).

73075609 is an equidigital number, since it uses as much as digits as its factorization.

73075609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 73075609 is about 8548.4272822549. The cubic root of 73075609 is about 418.0781601055.

The spelling of 73075609 in words is "seventy-three million, seventy-five thousand, six hundred nine".