1668646714 has 16 divisors (see below), whose sum is σ = 2862963648. Its totient is φ = 714527712.

The previous prime is 1668646699. The next prime is 1668646723. The reversal of 1668646714 is 4176468661.

It is a happy number.

It is a super-2 number, since 2×1668646714² = 5568763712285995592, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33252 + ... + 66655.

It is an arithmetic number, because the mean of its divisors is an integer number (178935228).

Almost surely, 2^1668646714 is an apocalyptic number.

1668646714 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1668646714 is a deficient number, since it is larger than the sum of its proper divisors (1194316934).

1668646714 is a wasteful number, since it uses less digits than its factorization.

1668646714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101109.

The product of its digits is 1161216, while the sum is 49.

The square root of 1668646714 is about 40849.0723762486. The cubic root of 1668646714 is about 1186.1004368247.

The spelling of 1668646714 in words is "one billion, six hundred sixty-eight million, six hundred forty-six thousand, seven hundred fourteen".