6643374 has 16 divisors (see below), whose sum is σ = 13312512. Its totient is φ = 2210168.

The previous prime is 6643361. The next prime is 6643381. The reversal of 6643374 is 4733466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4537 + ... + 5819.

It is an arithmetic number, because the mean of its divisors is an integer number (832032).

Almost surely, 2^6643374 is an apocalyptic number.

6643374 is an abundant number, since it is smaller than the sum of its proper divisors (6669138).

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

6643374 is a wasteful number, since it uses less digits than its factorization.

6643374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151.

The product of its digits is 36288, while the sum is 33.

The square root of 6643374 is about 2577.4743451682. The cubic root of 6643374 is about 187.9877576154.

The spelling of 6643374 in words is "six million, six hundred forty-three thousand, three hundred seventy-four".