6668340 has 48 divisors (see below), whose sum is σ = 21340032. Its totient is φ = 1524096.

The previous prime is 6668273. The next prime is 6668341. The reversal of 6668340 is 438666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7519 + ... + 8358.

It is an arithmetic number, because the mean of its divisors is an integer number (444584).

Almost surely, 2^6668340 is an apocalyptic number.

6668340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6668340 is an abundant number, since it is smaller than the sum of its proper divisors (14671692).

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

6668340 is a wasteful number, since it uses less digits than its factorization.

6668340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15896 (or 15894 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 6668340 is about 2582.3129167473. The cubic root of 6668340 is about 188.2229511285. Note that the first 3 decimals are identical.

The spelling of 6668340 in words is "six million, six hundred sixty-eight thousand, three hundred forty".