72706211 has 2 divisors, whose sum is σ = 72706212. Its totient is φ = 72706210.

The previous prime is 72706187. The next prime is 72706237. The reversal of 72706211 is 11260727.

It is an a-pointer prime, because the next prime (72706237) can be obtained adding 72706211 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72706211 - 2¹⁰ = 72705187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72706241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36353105 + 36353106.

It is an arithmetic number, because the mean of its divisors is an integer number (36353106).

Almost surely, 2^72706211 is an apocalyptic number.

72706211 is a deficient number, since it is larger than the sum of its proper divisors (1).

72706211 is an equidigital number, since it uses as much as digits as its factorization.

72706211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 72706211 is about 8526.7937115894. The cubic root of 72706211 is about 417.3725065188.

Adding to 72706211 its reverse (11260727), we get a palindrome (83966938).

The spelling of 72706211 in words is "seventy-two million, seven hundred six thousand, two hundred eleven".