1666752696 has 192 divisors, whose sum is σ = 5380577280. Its totient is φ = 456088320.

The previous prime is 1666752691. The next prime is 1666752701. The reversal of 1666752696 is 6962576661.

It is an interprime number because it is at equal distance from previous prime (1666752691) and next prime (1666752701).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666752691) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1671270 + ... + 1672266.

It is an arithmetic number, because the mean of its divisors is an integer number (28023840).

Almost surely, 2^1666752696 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 1666752696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2690288640).

1666752696 is an abundant number, since it is smaller than the sum of its proper divisors (3713824584).

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

1666752696 is a wasteful number, since it uses less digits than its factorization.

1666752696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154 (or 1147 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 1666752696 is about 40825.8826726380. The cubic root of 1666752696 is about 1185.6515009563.

The spelling of 1666752696 in words is "one billion, six hundred sixty-six million, seven hundred fifty-two thousand, six hundred ninety-six".