73409165 has 8 divisors (see below), whose sum is σ = 89298168. Its totient is φ = 57922560.

The previous prime is 73409137. The next prime is 73409173. The reversal of 73409165 is 56190437.

It can be written as a sum of positive squares in 4 ways, for example, as 17623204 + 55785961 = 4198^2 + 7469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73409165 - 2¹⁰ = 73408141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100196 + ... + 100925.

It is an arithmetic number, because the mean of its divisors is an integer number (11162271).

Almost surely, 2^73409165 is an apocalyptic number.

It is an amenable number.

73409165 is a deficient number, since it is larger than the sum of its proper divisors (15889003).

73409165 is a wasteful number, since it uses less digits than its factorization.

73409165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201199.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 73409165 is about 8567.9148571867. The cubic root of 73409165 is about 418.7133051680.

The spelling of 73409165 in words is "seventy-three million, four hundred nine thousand, one hundred sixty-five".