1686348 has 36 divisors (see below), whose sum is σ = 4306120. Its totient is φ = 556416.

The previous prime is 1686343. The next prime is 1686353. The reversal of 1686348 is 8436861.

It is a happy number.

1686348 is a `hidden beast` number, since 16 + 8 + 634 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1686343) and next prime (1686353).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1686341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4836 + ... + 5172.

2^1686348 is an apocalyptic number.

1686348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1686348 is an abundant number, since it is smaller than the sum of its proper divisors (2619772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1686348 is a wasteful number, since it uses less digits than its factorization.

1686348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 481 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1686348 is about 1298.5946249696. The cubic root of 1686348 is about 119.0279810858.

The spelling of 1686348 in words is "one million, six hundred eighty-six thousand, three hundred forty-eight".