73305013 has 2 divisors, whose sum is σ = 73305014. Its totient is φ = 73305012.

The previous prime is 73304929. The next prime is 73305031. The reversal of 73305013 is 31050337.

Together with next prime (73305031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72301009 + 1004004 = 8503^2 + 1002^2 .

It is an emirp because it is prime and its reverse (31050337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73305013 - 2⁹ = 73304501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73305083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36652506 + 36652507.

It is an arithmetic number, because the mean of its divisors is an integer number (36652507).

Almost surely, 2^73305013 is an apocalyptic number.

It is an amenable number.

73305013 is a deficient number, since it is larger than the sum of its proper divisors (1).

73305013 is an equidigital number, since it uses as much as digits as its factorization.

73305013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 22.

The square root of 73305013 is about 8561.8346748813. The cubic root of 73305013 is about 418.5151897202.

The spelling of 73305013 in words is "seventy-three million, three hundred five thousand, thirteen".