343866678 has 16 divisors (see below), whose sum is σ = 706321200. Its totient is φ = 111524256.

The previous prime is 343866671. The next prime is 343866739. The reversal of 343866678 is 876668343.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 343866678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343866671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774253 + ... + 774696.

It is an arithmetic number, because the mean of its divisors is an integer number (44145075).

Almost surely, 2^343866678 is an apocalyptic number.

343866678 is an abundant number, since it is smaller than the sum of its proper divisors (362454522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343866678 is a wasteful number, since it uses less digits than its factorization.

343866678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548991.

The product of its digits is 3483648, while the sum is 51.

The square root of 343866678 is about 18543.6425224388. The cubic root of 343866678 is about 700.5890809939.

The spelling of 343866678 in words is "three hundred forty-three million, eight hundred sixty-six thousand, six hundred seventy-eight".