1686885355 has 8 divisors (see below), whose sum is σ = 2029903200. Its totient is φ = 1345747776.

The previous prime is 1686885353. The next prime is 1686885359. The reversal of 1686885355 is 5535886861.

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

It is a cyclic number.

It is not a de Polignac number, because 1686885355 - 2¹ = 1686885353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1686885296 and 1686885305.

It is not an unprimeable number, because it can be changed into a prime (1686885353) 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, 468090 + ... + 471679.

It is an arithmetic number, because the mean of its divisors is an integer number (253737900).

Almost surely, 2^1686885355 is an apocalyptic number.

1686885355 is a deficient number, since it is larger than the sum of its proper divisors (343017845).

1686885355 is an equidigital number, since it uses as much as digits as its factorization.

1686885355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940133.

The product of its digits is 6912000, while the sum is 55.

The square root of 1686885355 is about 41071.7099108377. The cubic root of 1686885355 is about 1190.4062250349.

The spelling of 1686885355 in words is "one billion, six hundred eighty-six million, eight hundred eighty-five thousand, three hundred fifty-five".