1680375 has 16 divisors (see below), whose sum is σ = 2796768. Its totient is φ = 896000.

The previous prime is 1680373. The next prime is 1680377. The reversal of 1680375 is 5730861.

It is an interprime number because it is at equal distance from previous prime (1680373) and next prime (1680377).

It is not a de Polignac number, because 1680375 - 2¹ = 1680373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1866 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (174798).

2^1680375 is an apocalyptic number.

1680375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1680375 is a deficient number, since it is larger than the sum of its proper divisors (1116393).

1680375 is an equidigital number, since it uses as much as digits as its factorization.

1680375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499 (or 4489 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1680375 is about 1296.2927910006. The cubic root of 1680375 is about 118.8872835192.

The spelling of 1680375 in words is "one million, six hundred eighty thousand, three hundred seventy-five".