1666710304 has 72 divisors (see below), whose sum is σ = 3869618508. Its totient is φ = 704471040.

The previous prime is 1666710271. The next prime is 1666710307. The reversal of 1666710304 is 4030176661.

It can be written as a sum of positive squares in 2 ways, for example, as 1556460304 + 110250000 = 39452^2 + 10500^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1666710304.

It is not an unprimeable number, because it can be changed into a prime (1666710307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107184 + ... + 121744.

Almost surely, 2^1666710304 is an apocalyptic number.

1666710304 is a gapful number since it is divisible by the number (14) 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 1666710304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1934809254).

1666710304 is an abundant number, since it is smaller than the sum of its proper divisors (2202908204).

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

1666710304 is a wasteful number, since it uses less digits than its factorization.

1666710304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14658 (or 14643 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 1666710304 is about 40825.3634888901. The cubic root of 1666710304 is about 1185.6414489623.

Adding to 1666710304 its reverse (4030176661), we get a palindrome (5696886965).

The spelling of 1666710304 in words is "one billion, six hundred sixty-six million, seven hundred ten thousand, three hundred four".