1680285 has 8 divisors (see below), whose sum is σ = 2688480. Its totient is φ = 896144.

The previous prime is 1680277. The next prime is 1680313. The reversal of 1680285 is 5820861.

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 1680285 - 2³ = 1680277 is a prime.

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, 55995 + ... + 56024.

It is an arithmetic number, because the mean of its divisors is an integer number (336060).

2^1680285 is an apocalyptic number.

1680285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1680285 is a deficient number, since it is larger than the sum of its proper divisors (1008195).

1680285 is a wasteful number, since it uses less digits than its factorization.

1680285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112027.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1680285 is about 1296.2580761561. The cubic root of 1680285 is about 118.8851609679.

The spelling of 1680285 in words is "one million, six hundred eighty thousand, two hundred eighty-five".