72433565 has 8 divisors (see below), whose sum is σ = 87690168. Its totient is φ = 57433600.

The previous prime is 72433553. The next prime is 72433589. The reversal of 72433565 is 56533427.

It can be written as a sum of positive squares in 4 ways, for example, as 1907161 + 70526404 = 1381^2 + 8398^2 .

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

It is not a de Polignac number, because 72433565 - 2¹⁴ = 72417181 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, 63536 + ... + 64665.

It is an arithmetic number, because the mean of its divisors is an integer number (10961271).

Almost surely, 2^72433565 is an apocalyptic number.

It is an amenable number.

72433565 is a deficient number, since it is larger than the sum of its proper divisors (15256603).

72433565 is a wasteful number, since it uses less digits than its factorization.

72433565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128319.

The product of its digits is 75600, while the sum is 35.

The square root of 72433565 is about 8510.7910913146. The cubic root of 72433565 is about 416.8501417744.

The spelling of 72433565 in words is "seventy-two million, four hundred thirty-three thousand, five hundred sixty-five".