6668197340 has 144 divisors (see below), whose sum is σ = 16986138624. Its totient is φ = 2189980800.

The previous prime is 6668197253. The next prime is 6668197343. The reversal of 6668197340 is 437918666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668197343) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 3128075 + ... + 3130205.

It is an arithmetic number, because the mean of its divisors is an integer number (117959296).

Almost surely, 2^6668197340 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 6668197340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8493069312).

6668197340 is an abundant number, since it is smaller than the sum of its proper divisors (10317941284).

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

6668197340 is a wasteful number, since it uses less digits than its factorization.

6668197340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 6668197340 is about 81659.0309763715. The cubic root of 6668197340 is about 1882.2160886149.

The spelling of 6668197340 in words is "six billion, six hundred sixty-eight million, one hundred ninety-seven thousand, three hundred forty".