343800685 has 4 divisors (see below), whose sum is σ = 412560828. Its totient is φ = 275040544.

The previous prime is 343800679. The next prime is 343800733. The reversal of 343800685 is 586008343.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 227225476 + 116575209 = 15074^2 + 10797^2 .

It is a cyclic number.

It is not a de Polignac number, because 343800685 - 2⁹ = 343800173 is a prime.

It is a super-2 number, since 2×343800685² = 236397822012938450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34380064 + ... + 34380073.

It is an arithmetic number, because the mean of its divisors is an integer number (103140207).

Almost surely, 2^343800685 is an apocalyptic number.

It is an amenable number.

343800685 is a deficient number, since it is larger than the sum of its proper divisors (68760143).

343800685 is an equidigital number, since it uses as much as digits as its factorization.

343800685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68760142.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 343800685 is about 18541.8630401586. The cubic root of 343800685 is about 700.5442603933.

The spelling of 343800685 in words is "three hundred forty-three million, eight hundred thousand, six hundred eighty-five".