72069227 has 4 divisors (see below), whose sum is σ = 72174216. Its totient is φ = 71964240.

The previous prime is 72069211. The next prime is 72069233. The reversal of 72069227 is 72296027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72296027 = 331 ⋅218417.

It is a cyclic number.

It is not a de Polignac number, because 72069227 - 2⁴ = 72069211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72069827) 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 3 ways as a sum of consecutive naturals, for example, 51458 + ... + 52839.

It is an arithmetic number, because the mean of its divisors is an integer number (18043554).

Almost surely, 2^72069227 is an apocalyptic number.

72069227 is a deficient number, since it is larger than the sum of its proper divisors (104989).

72069227 is a wasteful number, since it uses less digits than its factorization.

72069227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104988.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 72069227 is about 8489.3596342716. The cubic root of 72069227 is about 416.1500533481.

The spelling of 72069227 in words is "seventy-two million, sixty-nine thousand, two hundred twenty-seven".