1684338685 has 8 divisors (see below), whose sum is σ = 2022080256. Its totient is φ = 1346888400.

The previous prime is 1684338613. The next prime is 1684338701. The reversal of 1684338685 is 5868334861.

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

It is not a de Polignac number, because 1684338685 - 2¹¹ = 1684336637 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 59889 + ... + 83398.

It is an arithmetic number, because the mean of its divisors is an integer number (252760032).

Almost surely, 2^1684338685 is an apocalyptic number.

It is an amenable number.

1684338685 is a deficient number, since it is larger than the sum of its proper divisors (337741571).

1684338685 is a wasteful number, since it uses less digits than its factorization.

1684338685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145643.

The product of its digits is 3317760, while the sum is 52.

The square root of 1684338685 is about 41040.6954741267. The cubic root of 1684338685 is about 1189.8068761287.

The spelling of 1684338685 in words is "one billion, six hundred eighty-four million, three hundred thirty-eight thousand, six hundred eighty-five".