1689534 has 96 divisors (see below), whose sum is σ = 4852224. Its totient is φ = 411840.

The previous prime is 1689533. The next prime is 1689551. The reversal of 1689534 is 4359861.

It is a nialpdrome in base 11.

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 in 47 ways as a sum of consecutive naturals, for example, 31852 + ... + 31904.

It is an arithmetic number, because the mean of its divisors is an integer number (50544).

2^1689534 is an apocalyptic number.

1689534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1689534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2426112).

1689534 is an abundant number, since it is smaller than the sum of its proper divisors (3162690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689534 is a wasteful number, since it uses less digits than its factorization.

1689534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 99 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1689534 is about 1299.8207568738. The cubic root of 1689534 is about 119.1028933770.

The spelling of 1689534 in words is "one million, six hundred eighty-nine thousand, five hundred thirty-four".