343680256 has 18 divisors (see below), whose sum is σ = 686018522. Its totient is φ = 171840000.

The previous prime is 343680221. The next prime is 343680263. The reversal of 343680256 is 652086343.

It can be written as a sum of positive squares in only one way, i.e., 243360000 + 100320256 = 15600^2 + 10016^2 .

It is a super-3 number, since 3×343680256³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670995 + ... + 671506.

Almost surely, 2^343680256 is an apocalyptic number.

It is an amenable number.

343680256 is a deficient number, since it is larger than the sum of its proper divisors (342338266).

343680256 is an equidigital number, since it uses as much as digits as its factorization.

343680256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342517 (or 1342503 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 343680256 is about 18538.6152665187. The cubic root of 343680256 is about 700.4624535974.

The spelling of 343680256 in words is "three hundred forty-three million, six hundred eighty thousand, two hundred fifty-six".