73205873 has 4 divisors (see below), whose sum is σ = 78837108. Its totient is φ = 67574640.

The previous prime is 73205863. The next prime is 73205887. The reversal of 73205873 is 37850237.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12475024 + 60730849 = 3532^2 + 7793^2 .

It is a cyclic number.

It is not a de Polignac number, because 73205873 - 2⁸ = 73205617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73205863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2815598 + ... + 2815623.

It is an arithmetic number, because the mean of its divisors is an integer number (19709277).

Almost surely, 2^73205873 is an apocalyptic number.

It is an amenable number.

73205873 is a deficient number, since it is larger than the sum of its proper divisors (5631235).

73205873 is a wasteful number, since it uses less digits than its factorization.

73205873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631234.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 73205873 is about 8556.0430690828. The cubic root of 73205873 is about 418.3264335760.

The spelling of 73205873 in words is "seventy-three million, two hundred five thousand, eight hundred seventy-three".