1689696 has 36 divisors (see below), whose sum is σ = 4805892. Its totient is φ = 563136.

The previous prime is 1689661. The next prime is 1689703. The reversal of 1689696 is 6969861.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2646 + ... + 3221.

It is an arithmetic number, because the mean of its divisors is an integer number (133497).

2^1689696 is an apocalyptic number.

1689696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1689696 is an abundant number, since it is smaller than the sum of its proper divisors (3116196).

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

1689696 is a wasteful number, since it uses less digits than its factorization.

1689696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883 (or 5872 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 1689696 is about 1299.8830716645. The cubic root of 1689696 is about 119.1066999596.

The spelling of 1689696 in words is "one million, six hundred eighty-nine thousand, six hundred ninety-six".