34116721 has 2 divisors, whose sum is σ = 34116722. Its totient is φ = 34116720.

The previous prime is 34116697. The next prime is 34116737. The reversal of 34116721 is 12761143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 893025 = 5764^2 + 945^2 .

It is an emirp because it is prime and its reverse (12761143) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34116721 is a prime.

It is not a weakly prime, because it can be changed into another prime (34186721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17058360 + 17058361.

It is an arithmetic number, because the mean of its divisors is an integer number (17058361).

Almost surely, 2^34116721 is an apocalyptic number.

It is an amenable number.

34116721 is a deficient number, since it is larger than the sum of its proper divisors (1).

34116721 is an equidigital number, since it uses as much as digits as its factorization.

34116721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 34116721 is about 5840.9520628062. The cubic root of 34116721 is about 324.3314731165.

Adding to 34116721 its reverse (12761143), we get a palindrome (46877864).

The spelling of 34116721 in words is "thirty-four million, one hundred sixteen thousand, seven hundred twenty-one".