1685072 has 40 divisors (see below), whose sum is σ = 3600960. Its totient is φ = 760320.

The previous prime is 1685071. The next prime is 1685077. The reversal of 1685072 is 2705861.

1685072 is nontrivially palindromic in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685071) 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, 6872 + ... + 7112.

It is an arithmetic number, because the mean of its divisors is an integer number (90024).

2^1685072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1685072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800480).

1685072 is an abundant number, since it is smaller than the sum of its proper divisors (1915888).

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

1685072 is a wasteful number, since it uses less digits than its factorization.

1685072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1685072 is about 1298.1032316422. The cubic root of 1685072 is about 118.9979520868.

The spelling of 1685072 in words is "one million, six hundred eighty-five thousand, seventy-two".