1689201 has 8 divisors (see below), whose sum is σ = 2502560. Its totient is φ = 1126116.

The previous prime is 1689199. The next prime is 1689211. The reversal of 1689201 is 1029861.

It is not a de Polignac number, because 1689201 - 2¹ = 1689199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 62563 = 1689201 / (1 + 6 + 8 + 9 + 2 + 0 + 1).

It is a Duffinian number.

1689201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1689211) 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, 31255 + ... + 31308.

It is an arithmetic number, because the mean of its divisors is an integer number (312820).

2^1689201 is an apocalyptic number.

It is an amenable number.

1689201 is a deficient number, since it is larger than the sum of its proper divisors (813359).

1689201 is an equidigital number, since it uses as much as digits as its factorization.

1689201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62572 (or 62566 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1689201 is about 1299.6926559768. The cubic root of 1689201 is about 119.0950679708.

It can be divided in two parts, 168920 and 1, that added together give a square (168921 = 411²).

The spelling of 1689201 in words is "one million, six hundred eighty-nine thousand, two hundred one".