1689061 has 8 divisors (see below), whose sum is σ = 1862784. Its totient is φ = 1518720.

The previous prime is 1689053. The next prime is 1689067. The reversal of 1689061 is 1609861.

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 1689061 - 2³ = 1689053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276 + ... + 1858.

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

2^1689061 is an apocalyptic number.

1689061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1689061 is a deficient number, since it is larger than the sum of its proper divisors (173723).

1689061 is a wasteful number, since it uses less digits than its factorization.

1689061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1689061 is about 1299.6387959737. The cubic root of 1689061 is about 119.0917777032.

It can be divided in two parts, 168 and 9061, that added together give a palindrome (9229).

The spelling of 1689061 in words is "one million, six hundred eighty-nine thousand, sixty-one".