6643914 has 8 divisors (see below), whose sum is σ = 13287840. Its totient is φ = 2214636.

The previous prime is 6643909. The next prime is 6643919. The reversal of 6643914 is 4193466.

It is an interprime number because it is at equal distance from previous prime (6643909) and next prime (6643919).

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

6643914 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (6643919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553654 + ... + 553665.

It is an arithmetic number, because the mean of its divisors is an integer number (1660980).

Almost surely, 2^6643914 is an apocalyptic number.

6643914 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6643914 is a wasteful number, since it uses less digits than its factorization.

6643914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107324.

The product of its digits is 15552, while the sum is 33.

The square root of 6643914 is about 2577.5790967495. The cubic root of 6643914 is about 187.9928509429.

It can be divided in two parts, 6643 and 914, that added together give a palindrome (7557).

The spelling of 6643914 in words is "six million, six hundred forty-three thousand, nine hundred fourteen".