19960668 has 120 divisors (see below), whose sum is σ = 64317792. Its totient is φ = 5256576.

The previous prime is 19960667. The next prime is 19960673. The reversal of 19960668 is 86606991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19960663) 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 39 ways as a sum of consecutive naturals, for example, 29146 + ... + 29822.

Almost surely, 2^19960668 is an apocalyptic number.

19960668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19960668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32158896).

19960668 is an abundant number, since it is smaller than the sum of its proper divisors (44357124).

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

19960668 is a wasteful number, since it uses less digits than its factorization.

19960668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 702 counting only the distinct ones).

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

The square root of 19960668 is about 4467.7363395796. The cubic root of 19960668 is about 271.2637057640.

The spelling of 19960668 in words is "nineteen million, nine hundred sixty thousand, six hundred sixty-eight".