1680235 has 8 divisors (see below), whose sum is σ = 2035440. Its totient is φ = 1331424.

The previous prime is 1680191. The next prime is 1680247. The reversal of 1680235 is 5320861.

It is a happy number.

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 1680235 - 2⁹ = 1679723 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁵ + 8 + 0 + 2 + 3¹³ + 5⁷ .

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, 997 + ... + 2086.

It is an arithmetic number, because the mean of its divisors is an integer number (254430).

2^1680235 is an apocalyptic number.

1680235 is a deficient number, since it is larger than the sum of its proper divisors (355205).

1680235 is a wasteful number, since it uses less digits than its factorization.

1680235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1680235 is about 1296.2387897297. The cubic root of 1680235 is about 118.8839817399.

It can be divided in two parts, 16802 and 35, that multiplied together give a triangular number (588070 = T₁₀₈₄).

The spelling of 1680235 in words is "one million, six hundred eighty thousand, two hundred thirty-five".