1689161 has 8 divisors (see below), whose sum is σ = 1761984. Its totient is φ = 1617840.

The previous prime is 1689113. The next prime is 1689167. The reversal of 1689161 is 1619861.

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 1689161 - 2¹⁸ = 1427017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1689167) 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, 2306 + ... + 2948.

It is an arithmetic number, because the mean of its divisors is an integer number (220248).

2^1689161 is an apocalyptic number.

It is an amenable number.

1689161 is a deficient number, since it is larger than the sum of its proper divisors (72823).

1689161 is an equidigital number, since it uses as much as digits as its factorization.

1689161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751.

The product of its digits is 2592, while the sum is 32.

The square root of 1689161 is about 1299.6772676322. The cubic root of 1689161 is about 119.0941279129.

The spelling of 1689161 in words is "one million, six hundred eighty-nine thousand, one hundred sixty-one".