338006681 has 2 divisors, whose sum is σ = 338006682. Its totient is φ = 338006680.

The previous prime is 338006663. The next prime is 338006707. The reversal of 338006681 is 186600833.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255360400 + 82646281 = 15980^2 + 9091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338006681 is a prime.

It is a super-2 number, since 2×338006681² = 228497032801271522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (338006611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169003340 + 169003341.

It is an arithmetic number, because the mean of its divisors is an integer number (169003341).

Almost surely, 2^338006681 is an apocalyptic number.

It is an amenable number.

338006681 is a deficient number, since it is larger than the sum of its proper divisors (1).

338006681 is an equidigital number, since it uses as much as digits as its factorization.

338006681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 338006681 is about 18384.9580091987. The cubic root of 338006681 is about 696.5865663677.

The spelling of 338006681 in words is "three hundred thirty-eight million, six thousand, six hundred eighty-one".