1680207 has 8 divisors (see below), whose sum is σ = 2300976. Its totient is φ = 1089792.

The previous prime is 1680191. The next prime is 1680247. The reversal of 1680207 is 7020861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1680207 - 2⁴ = 1680191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7458 + ... + 7679.

It is an arithmetic number, because the mean of its divisors is an integer number (287622).

2^1680207 is an apocalyptic number.

1680207 is a deficient number, since it is larger than the sum of its proper divisors (620769).

1680207 is a wasteful number, since it uses less digits than its factorization.

1680207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15177.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1680207 is about 1296.2279892056. The cubic root of 1680207 is about 118.8833213621.

The spelling of 1680207 in words is "one million, six hundred eighty thousand, two hundred seven".