72220333 has 2 divisors, whose sum is σ = 72220334. Its totient is φ = 72220332.

The previous prime is 72220327. The next prime is 72220363. The reversal of 72220333 is 33302227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66373609 + 5846724 = 8147^2 + 2418^2 .

It is a cyclic number.

It is not a de Polignac number, because 72220333 - 2⁹ = 72219821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72220363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36110166 + 36110167.

It is an arithmetic number, because the mean of its divisors is an integer number (36110167).

Almost surely, 2^72220333 is an apocalyptic number.

It is an amenable number.

72220333 is a deficient number, since it is larger than the sum of its proper divisors (1).

72220333 is an equidigital number, since it uses as much as digits as its factorization.

72220333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 72220333 is about 8498.2547031729. The cubic root of 72220333 is about 416.4406946078.

The spelling of 72220333 in words is "seventy-two million, two hundred twenty thousand, three hundred thirty-three".