34688681 has 2 divisors, whose sum is σ = 34688682. Its totient is φ = 34688680.

The previous prime is 34688671. The next prime is 34688707. The reversal of 34688681 is 18688643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34515625 + 173056 = 5875^2 + 416^2 .

It is an emirp because it is prime and its reverse (18688643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34688681 - 2⁶ = 34688617 is a prime.

It is a super-2 number, since 2×34688681² = 2406609179039522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (34688671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17344340 + 17344341.

It is an arithmetic number, because the mean of its divisors is an integer number (17344341).

Almost surely, 2^34688681 is an apocalyptic number.

It is an amenable number.

34688681 is a deficient number, since it is larger than the sum of its proper divisors (1).

34688681 is an equidigital number, since it uses as much as digits as its factorization.

34688681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 44.

The square root of 34688681 is about 5889.7097551577. The cubic root of 34688681 is about 326.1338886980.

The spelling of 34688681 in words is "thirty-four million, six hundred eighty-eight thousand, six hundred eighty-one".