1680099 has 8 divisors (see below), whose sum is σ = 2249232. Its totient is φ = 1115520.

The previous prime is 1680089. The next prime is 1680101. The reversal of 1680099 is 9900861.

It is a happy number.

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

It is not a de Polignac number, because 1680099 - 2¹³ = 1671907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1680079) 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, 154 + ... + 1839.

It is an arithmetic number, because the mean of its divisors is an integer number (281154).

2^1680099 is an apocalyptic number.

1680099 is a deficient number, since it is larger than the sum of its proper divisors (569133).

1680099 is a wasteful number, since it uses less digits than its factorization.

1680099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1680099 is about 1296.1863291981. The cubic root of 1680099 is about 118.8807741216.

The spelling of 1680099 in words is "one million, six hundred eighty thousand, ninety-nine".