6640683 has 8 divisors (see below), whose sum is σ = 10119168. Its totient is φ = 3794664.

The previous prime is 6640679. The next prime is 6640687. The reversal of 6640683 is 3860466.

It is an interprime number because it is at equal distance from previous prime (6640679) and next prime (6640687).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6640683 - 2² = 6640679 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6640687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158091 + ... + 158132.

It is an arithmetic number, because the mean of its divisors is an integer number (1264896).

Almost surely, 2^6640683 is an apocalyptic number.

6640683 is a deficient number, since it is larger than the sum of its proper divisors (3478485).

6640683 is a wasteful number, since it uses less digits than its factorization.

6640683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316233.

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

The square root of 6640683 is about 2576.9522696395. The cubic root of 6640683 is about 187.9623717509.

The spelling of 6640683 in words is "six million, six hundred forty thousand, six hundred eighty-three".