72847741 has 2 divisors, whose sum is σ = 72847742. Its totient is φ = 72847740.

The previous prime is 72847721. The next prime is 72847763. The reversal of 72847741 is 14774827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65124900 + 7722841 = 8070^2 + 2779^2 .

It is a cyclic number.

It is not a de Polignac number, because 72847741 - 2¹⁹ = 72323453 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72847694 and 72847703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72847721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36423870 + 36423871.

It is an arithmetic number, because the mean of its divisors is an integer number (36423871).

Almost surely, 2^72847741 is an apocalyptic number.

It is an amenable number.

72847741 is a deficient number, since it is larger than the sum of its proper divisors (1).

72847741 is an equidigital number, since it uses as much as digits as its factorization.

72847741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87808, while the sum is 40.

The square root of 72847741 is about 8535.0888103171. The cubic root of 72847741 is about 417.6431502616.

The spelling of 72847741 in words is "seventy-two million, eight hundred forty-seven thousand, seven hundred forty-one".