72070111 has 2 divisors, whose sum is σ = 72070112. Its totient is φ = 72070110.

The previous prime is 72070081. The next prime is 72070147. The reversal of 72070111 is 11107027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72070111 - 2⁵ = 72070079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72070151) 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, 36035055 + 36035056.

It is an arithmetic number, because the mean of its divisors is an integer number (36035056).

Almost surely, 2^72070111 is an apocalyptic number.

72070111 is a deficient number, since it is larger than the sum of its proper divisors (1).

72070111 is an equidigital number, since it uses as much as digits as its factorization.

72070111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 72070111 is about 8489.4116992875. The cubic root of 72070111 is about 416.1517548378.

Adding to 72070111 its reverse (11107027), we get a palindrome (83177138).

The spelling of 72070111 in words is "seventy-two million, seventy thousand, one hundred eleven".