1668034660 has 24 divisors (see below), whose sum is σ = 3504203640. Its totient is φ = 666960384.

The previous prime is 1668034619. The next prime is 1668034717. The reversal of 1668034660 is 664308661.

It can be written as a sum of positive squares in 4 ways, for example, as 160731684 + 1507302976 = 12678^2 + 38824^2 .

It is a super-2 number, since 2×1668034660² = 5564679253922631200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 43546 + ... + 72334.

It is an arithmetic number, because the mean of its divisors is an integer number (146008485).

Almost surely, 2^1668034660 is an apocalyptic number.

1668034660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1668034660 is an abundant number, since it is smaller than the sum of its proper divisors (1836168980).

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

1668034660 is a wasteful number, since it uses less digits than its factorization.

1668034660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31695 (or 31693 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 1668034660 is about 40841.5800379956. The cubic root of 1668034660 is about 1185.9553998738.

The spelling of 1668034660 in words is "one billion, six hundred sixty-eight million, thirty-four thousand, six hundred sixty".