1689536 has 14 divisors (see below), whose sum is σ = 3352800. Its totient is φ = 844736.

The previous prime is 1689533. The next prime is 1689551. The reversal of 1689536 is 6359861.

It is a d-powerful number, because it can be written as 1 + 6³ + 8 + 9 + 5⁵ + 3⁸ + 6⁸ .

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1689536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13136 + ... + 13263.

2^1689536 is an apocalyptic number.

1689536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1689536 is a deficient number, since it is larger than the sum of its proper divisors (1663264).

1689536 is an equidigital number, since it uses as much as digits as its factorization.

1689536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26411 (or 26401 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 1689536 is about 1299.8215262104. The cubic root of 1689536 is about 119.1029403733.

The spelling of 1689536 in words is "one million, six hundred eighty-nine thousand, five hundred thirty-six".