1684089 has 12 divisors (see below), whose sum is σ = 2653872. Its totient is φ = 1020600.

The previous prime is 1684079. The next prime is 1684091. The reversal of 1684089 is 9804861.

It is a happy number.

It is not a de Polignac number, because 1684089 - 2¹⁷ = 1553017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1684019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8407 + ... + 8604.

It is an arithmetic number, because the mean of its divisors is an integer number (221156).

2^1684089 is an apocalyptic number.

It is an amenable number.

1684089 is a deficient number, since it is larger than the sum of its proper divisors (969783).

1684089 is a wasteful number, since it uses less digits than its factorization.

1684089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17028 (or 17025 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1684089 is about 1297.7245470438. The cubic root of 1684089 is about 118.9748081221.

The spelling of 1684089 in words is "one million, six hundred eighty-four thousand, eighty-nine".