19707066 has 48 divisors (see below), whose sum is σ = 46519200. Its totient is φ = 6005664.

The previous prime is 19707049. The next prime is 19707073. The reversal of 19707066 is 66070791.

It is a self number, because there is not a number n which added to its sum of digits gives 19707066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8925 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (969150).

Almost surely, 2^19707066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19707066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23259600).

19707066 is an abundant number, since it is smaller than the sum of its proper divisors (26812134).

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

19707066 is a wasteful number, since it uses less digits than its factorization.

19707066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 19707066 is about 4439.2641282086. The cubic root of 19707066 is about 270.1099963343.

It can be divided in two parts, 197070 and 66, that added together give a square (197136 = 444²).

The spelling of 19707066 in words is "nineteen million, seven hundred seven thousand, sixty-six".