34720073 has 2 divisors, whose sum is σ = 34720074. Its totient is φ = 34720072.

The previous prime is 34720061. The next prime is 34720117. The reversal of 34720073 is 37002743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34668544 + 51529 = 5888^2 + 227^2 .

It is an emirp because it is prime and its reverse (37002743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34720073 - 2⁶ = 34720009 is a prime.

It is not a weakly prime, because it can be changed into another prime (34720033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17360036 + 17360037.

It is an arithmetic number, because the mean of its divisors is an integer number (17360037).

Almost surely, 2^34720073 is an apocalyptic number.

It is an amenable number.

34720073 is a deficient number, since it is larger than the sum of its proper divisors (1).

34720073 is an equidigital number, since it uses as much as digits as its factorization.

34720073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 34720073 is about 5892.3741395129. The cubic root of 34720073 is about 326.2322388221.

The spelling of 34720073 in words is "thirty-four million, seven hundred twenty thousand, seventy-three".