72267277 has 2 divisors, whose sum is σ = 72267278. Its totient is φ = 72267276.

The previous prime is 72267263. The next prime is 72267287. The reversal of 72267277 is 77276227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68211081 + 4056196 = 8259^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 72267277 - 2¹¹ = 72265229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72267227) 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 as a sum of consecutive naturals, namely, 36133638 + 36133639.

It is an arithmetic number, because the mean of its divisors is an integer number (36133639).

Almost surely, 2^72267277 is an apocalyptic number.

It is an amenable number.

72267277 is a deficient number, since it is larger than the sum of its proper divisors (1).

72267277 is an equidigital number, since it uses as much as digits as its factorization.

72267277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115248, while the sum is 40.

The square root of 72267277 is about 8501.0162333688. The cubic root of 72267277 is about 416.5309053879.

The spelling of 72267277 in words is "seventy-two million, two hundred sixty-seven thousand, two hundred seventy-seven".