1688011 has 8 divisors (see below), whose sum is σ = 1862784. Its totient is φ = 1519680.

The previous prime is 1687999. The next prime is 1688041. The reversal of 1688011 is 1108861.

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 1688011 - 2¹¹ = 1685963 is a prime.

It is a super-2 number, since 2×1688011² = 5698762272242, which contains 22 as substring.

It is a Duffinian number.

1688011 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1688041) 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, 1051 + ... + 2116.

It is an arithmetic number, because the mean of its divisors is an integer number (232848).

2^1688011 is an apocalyptic number.

1688011 is a deficient number, since it is larger than the sum of its proper divisors (174773).

1688011 is a wasteful number, since it uses less digits than its factorization.

1688011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 1688011 is about 1299.2347747809. The cubic root of 1688011 is about 119.0670948987.

The spelling of 1688011 in words is "one million, six hundred eighty-eight thousand, eleven".