72647205 has 32 divisors (see below), whose sum is σ = 123545088. Its totient is φ = 36326400.

The previous prime is 72647189. The next prime is 72647209. The reversal of 72647205 is 50274627.

It is not a de Polignac number, because 72647205 - 2⁴ = 72647189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72647209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109575 + ... + 110235.

It is an arithmetic number, because the mean of its divisors is an integer number (3860784).

Almost surely, 2^72647205 is an apocalyptic number.

It is an amenable number.

72647205 is a deficient number, since it is larger than the sum of its proper divisors (50897883).

72647205 is a wasteful number, since it uses less digits than its factorization.

72647205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 72647205 is about 8523.3329748403. The cubic root of 72647205 is about 417.2595673028.

The spelling of 72647205 in words is "seventy-two million, six hundred forty-seven thousand, two hundred five".