1999608 has 96 divisors (see below), whose sum is σ = 5929200. Its totient is φ = 559104.

The previous prime is 1999607. The next prime is 1999619. The reversal of 1999608 is 8069991.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 1999608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68938 + ... + 68966.

2^1999608 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 1999608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2964600).

1999608 is an abundant number, since it is smaller than the sum of its proper divisors (3929592).

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

1999608 is a wasteful number, since it uses less digits than its factorization.

1999608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 1999608 is about 1414.0749626523. The cubic root of 1999608 is about 125.9838729674.

The spelling of 1999608 in words is "one million, nine hundred ninety-nine thousand, six hundred eight".