343687 has 2 divisors, whose sum is σ = 343688. Its totient is φ = 343686.

The previous prime is 343667. The next prime is 343709. The reversal of 343687 is 786343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343687 - 2⁷ = 343559 is a prime.

343687 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343627) 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 as a sum of consecutive naturals, namely, 171843 + 171844.

It is an arithmetic number, because the mean of its divisors is an integer number (171844).

2³⁴³⁶⁸⁷ is an apocalyptic number.

343687 is a deficient number, since it is larger than the sum of its proper divisors (1).

343687 is an equidigital number, since it uses as much as digits as its factorization.

343687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 343687 is about 586.2482409355. The cubic root of 343687 is about 70.0467035267.

It can be divided in two parts, 343 and 687, that multiplied together give a triangular number (235641 = T₆₈₆).

The spelling of 343687 in words is "three hundred forty-three thousand, six hundred eighty-seven".