843387668 has 6 divisors (see below), whose sum is σ = 1475928426. Its totient is φ = 421693832.

The previous prime is 843387641. The next prime is 843387679. The reversal of 843387668 is 866783348.

It can be written as a sum of positive squares in only one way, i.e., 714065284 + 129322384 = 26722^2 + 11372^2 .

It is a super-2 number, since 2×843387668² = 1422605517068956448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 105423455 + ... + 105423462.

It is an arithmetic number, because the mean of its divisors is an integer number (245988071).

Almost surely, 2^843387668 is an apocalyptic number.

It is an amenable number.

843387668 is a deficient number, since it is larger than the sum of its proper divisors (632540758).

843387668 is a wasteful number, since it uses less digits than its factorization.

843387668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210846921 (or 210846919 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The square root of 843387668 is about 29041.1375121568. The cubic root of 843387668 is about 944.8055059172.

The spelling of 843387668 in words is "eight hundred forty-three million, three hundred eighty-seven thousand, six hundred sixty-eight".