73532609 has 2 divisors, whose sum is σ = 73532610. Its totient is φ = 73532608.

The previous prime is 73532561. The next prime is 73532611. The reversal of 73532609 is 90623537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36966400 + 36566209 = 6080^2 + 6047^2 .

It is an emirp because it is prime and its reverse (90623537) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73532609 - 2¹² = 73528513 is a prime.

Together with 73532611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73532629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36766304 + 36766305.

It is an arithmetic number, because the mean of its divisors is an integer number (36766305).

Almost surely, 2^73532609 is an apocalyptic number.

It is an amenable number.

73532609 is a deficient number, since it is larger than the sum of its proper divisors (1).

73532609 is an equidigital number, since it uses as much as digits as its factorization.

73532609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 73532609 is about 8575.1156843509. The cubic root of 73532609 is about 418.9478748789.

The spelling of 73532609 in words is "seventy-three million, five hundred thirty-two thousand, six hundred nine".