1689416 has 8 divisors (see below), whose sum is σ = 3167670. Its totient is φ = 844704.

The previous prime is 1689397. The next prime is 1689431. The reversal of 1689416 is 6149861.

It can be written as a sum of positive squares in only one way, i.e., 1552516 + 136900 = 1246^2 + 370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105581 + ... + 105596.

2^1689416 is an apocalyptic number.

It is an amenable number.

1689416 is a deficient number, since it is larger than the sum of its proper divisors (1478254).

1689416 is a wasteful number, since it uses less digits than its factorization.

1689416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211183 (or 211179 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 1689416 is about 1299.7753652074. The cubic root of 1689416 is about 119.1001205279.

The spelling of 1689416 in words is "one million, six hundred eighty-nine thousand, four hundred sixteen".