343878685 has 8 divisors (see below), whose sum is σ = 422719416. Its totient is φ = 268392960.

The previous prime is 343878683. The next prime is 343878707. The reversal of 343878685 is 586878343.

It can be written as a sum of positive squares in 4 ways, for example, as 25220484 + 318658201 = 5022^2 + 17851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 343878685 - 2¹ = 343878683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343878683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838524 + ... + 838933.

It is an arithmetic number, because the mean of its divisors is an integer number (52839927).

Almost surely, 2^343878685 is an apocalyptic number.

It is an amenable number.

343878685 is a deficient number, since it is larger than the sum of its proper divisors (78840731).

343878685 is a wasteful number, since it uses less digits than its factorization.

343878685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677503.

The product of its digits is 3870720, while the sum is 52.

The square root of 343878685 is about 18543.9662693826. The cubic root of 343878685 is about 700.5972351961.

The spelling of 343878685 in words is "three hundred forty-three million, eight hundred seventy-eight thousand, six hundred eighty-five".