6644274 has 64 divisors (see below), whose sum is σ = 16794624. Its totient is φ = 1705536.

The previous prime is 6644273. The next prime is 6644293. The reversal of 6644274 is 4724466.

It is not an unprimeable number, because it can be changed into a prime (6644273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23337 + ... + 23619.

It is an arithmetic number, because the mean of its divisors is an integer number (262416).

Almost surely, 2^6644274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6644274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8397312).

6644274 is an abundant number, since it is smaller than the sum of its proper divisors (10150350).

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

6644274 is a wasteful number, since it uses less digits than its factorization.

6644274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its digits is 32256, while the sum is 33.

The square root of 6644274 is about 2577.6489287721. The cubic root of 6644274 is about 187.9962463412.

The spelling of 6644274 in words is "six million, six hundred forty-four thousand, two hundred seventy-four".