1668980712 has 64 divisors (see below), whose sum is σ = 5049025920. Its totient is φ = 448800768.

The previous prime is 1668980701. The next prime is 1668980723. The reversal of 1668980712 is 2170898661.

It is an interprime number because it is at equal distance from previous prime (1668980701) and next prime (1668980723).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289333 + ... + 295044.

It is an arithmetic number, because the mean of its divisors is an integer number (78891030).

Almost surely, 2^1668980712 is an apocalyptic number.

1668980712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1668980712 is an abundant number, since it is smaller than the sum of its proper divisors (3380045208).

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

1668980712 is a wasteful number, since it uses less digits than its factorization.

1668980712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584410 (or 584406 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1668980712 is about 40853.1603673449. The cubic root of 1668980712 is about 1186.1795685629.

The spelling of 1668980712 in words is "one billion, six hundred sixty-eight million, nine hundred eighty thousand, seven hundred twelve".