73258609 has 2 divisors, whose sum is σ = 73258610. Its totient is φ = 73258608.

The previous prime is 73258607. The next prime is 73258613. The reversal of 73258609 is 90685237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66781584 + 6477025 = 8172^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 73258609 - 2¹ = 73258607 is a prime.

It is a super-2 number, since 2×73258609² = 10733647585229762, which contains 22 as substring.

Together with 73258607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73258607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36629304 + 36629305.

It is an arithmetic number, because the mean of its divisors is an integer number (36629305).

Almost surely, 2^73258609 is an apocalyptic number.

It is an amenable number.

73258609 is a deficient number, since it is larger than the sum of its proper divisors (1).

73258609 is an equidigital number, since it uses as much as digits as its factorization.

73258609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 73258609 is about 8559.1243126853. The cubic root of 73258609 is about 418.4268607076.

The spelling of 73258609 in words is "seventy-three million, two hundred fifty-eight thousand, six hundred nine".