73735609 has 2 divisors, whose sum is σ = 73735610. Its totient is φ = 73735608.

The previous prime is 73735549. The next prime is 73735633. The reversal of 73735609 is 90653737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37699600 + 36036009 = 6140^2 + 6003^2 .

It is a cyclic number.

It is not a de Polignac number, because 73735609 - 2²³ = 65347001 is a prime.

It is a super-3 number, since 3×73735609³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73735679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36867804 + 36867805.

It is an arithmetic number, because the mean of its divisors is an integer number (36867805).

Almost surely, 2^73735609 is an apocalyptic number.

It is an amenable number.

73735609 is a deficient number, since it is larger than the sum of its proper divisors (1).

73735609 is an equidigital number, since it uses as much as digits as its factorization.

73735609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 40.

The square root of 73735609 is about 8586.9441013669. The cubic root of 73735609 is about 419.3330476505. Note that the first 3 decimals are identical.

The spelling of 73735609 in words is "seventy-three million, seven hundred thirty-five thousand, six hundred nine".