1680011 has 4 divisors (see below), whose sum is σ = 1687224. Its totient is φ = 1672800.

The previous prime is 1679981. The next prime is 1680013. The reversal of 1680011 is 1100861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1100861 = 37 ⋅29753.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1680011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1680013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3245 + ... + 3726.

It is an arithmetic number, because the mean of its divisors is an integer number (421806).

2^1680011 is an apocalyptic number.

1680011 is a deficient number, since it is larger than the sum of its proper divisors (7213).

1680011 is an equidigital number, since it uses as much as digits as its factorization.

1680011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7212.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1680011 is about 1296.1523830168. The cubic root of 1680011 is about 118.8786985116.

Adding to 1680011 its reverse (1100861), we get a palindrome (2780872).

The spelling of 1680011 in words is "one million, six hundred eighty thousand, eleven".