348166681 has 6 divisors (see below), whose sum is σ = 369852110. Its totient is φ = 327686016.

The previous prime is 348166631. The next prime is 348166717. The reversal of 348166681 is 186661843.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 62015625 + 286151056 = 7875^2 + 16916^2 .

It is not a de Polignac number, because 348166681 - 2²⁷ = 213948953 is a prime.

It is a super-2 number, since 2×348166681² = 242440075517111522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (348166631) 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 in 5 ways as a sum of consecutive naturals, for example, 602076 + ... + 602653.

Almost surely, 2^348166681 is an apocalyptic number.

It is an amenable number.

348166681 is a deficient number, since it is larger than the sum of its proper divisors (21685429).

348166681 is a wasteful number, since it uses less digits than its factorization.

348166681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204763 (or 1204746 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 348166681 is about 18659.2250910910. The cubic root of 348166681 is about 703.4972473969.

The spelling of 348166681 in words is "three hundred forty-eight million, one hundred sixty-six thousand, six hundred eighty-one".