1680293 has 8 divisors (see below), whose sum is σ = 1762560. Its totient is φ = 1599840.

The previous prime is 1680277. The next prime is 1680313. The reversal of 1680293 is 3920861.

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 1680293 - 2⁴ = 1680277 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8³ + 0 + 2⁷ + 9 + 3³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1673 + ... + 2481.

It is an arithmetic number, because the mean of its divisors is an integer number (220320).

2^1680293 is an apocalyptic number.

It is an amenable number.

1680293 is a deficient number, since it is larger than the sum of its proper divisors (82267).

1680293 is an equidigital number, since it uses as much as digits as its factorization.

1680293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1680293 is about 1296.2611619577. The cubic root of 1680293 is about 118.8853496422.

The spelling of 1680293 in words is "one million, six hundred eighty thousand, two hundred ninety-three".