1989606 has 16 divisors (see below), whose sum is σ = 3999744. Its totient is φ = 659784.

The previous prime is 1989583. The next prime is 1989613. The reversal of 1989606 is 6069891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (249984).

2^1989606 is an apocalyptic number.

1989606 is an abundant number, since it is smaller than the sum of its proper divisors (2010138).

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

1989606 is a wasteful number, since it uses less digits than its factorization.

1989606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1989606 is about 1410.5339414562. The cubic root of 1989606 is about 125.7734654712.

The spelling of 1989606 in words is "one million, nine hundred eighty-nine thousand, six hundred six".