6668345700 has 54 divisors (see below), whose sum is σ = 20901561954. Its totient is φ = 1778225280.

The previous prime is 6668345699. The next prime is 6668345729. The reversal of 6668345700 is 75438666.

It can be written as a sum of positive squares in 3 ways, for example, as 1504198656 + 5164147044 = 38784^2 + 71862^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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 17 ways as a sum of consecutive naturals, for example, 3703737 + ... + 3705536.

Almost surely, 2^6668345700 is an apocalyptic number.

6668345700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6668345700 is an abundant number, since it is smaller than the sum of its proper divisors (14233216254).

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

6668345700 is a wasteful number, since it uses less digits than its factorization.

6668345700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7409293 (or 7409283 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 6668345700 is about 81659.9393827843. The cubic root of 6668345700 is about 1882.2300475853.

The spelling of 6668345700 in words is "six billion, six hundred sixty-eight million, three hundred forty-five thousand, seven hundred".