73733561 has 8 divisors (see below), whose sum is σ = 83934144. Its totient is φ = 64115920.

The previous prime is 73733507. The next prime is 73733587. The reversal of 73733561 is 16533737.

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

It is not a de Polignac number, because 73733561 - 2¹⁴ = 73717177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73733591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145466 + ... + 145971.

It is an arithmetic number, because the mean of its divisors is an integer number (10491768).

Almost surely, 2^73733561 is an apocalyptic number.

It is an amenable number.

73733561 is a deficient number, since it is larger than the sum of its proper divisors (10200583).

73733561 is a wasteful number, since it uses less digits than its factorization.

73733561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291471.

The product of its digits is 39690, while the sum is 35.

The square root of 73733561 is about 8586.8248497335. The cubic root of 73733561 is about 419.3291653018.

The spelling of 73733561 in words is "seventy-three million, seven hundred thirty-three thousand, five hundred sixty-one".