6313644 has 36 divisors (see below), whose sum is σ = 16159416. Its totient is φ = 2078208.

The previous prime is 6313639. The next prime is 6313669. The reversal of 6313644 is 4463136.

6313644 is a `hidden beast` number, since 6 + 3 + 13 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1932 + ... + 4044.

Almost surely, 2^6313644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6313644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8079708).

6313644 is an abundant number, since it is smaller than the sum of its proper divisors (9845772).

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

6313644 is a wasteful number, since it uses less digits than its factorization.

6313644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 2201 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 6313644 is about 2512.6965594755. The cubic root of 6313644 is about 184.8247085644.

The spelling of 6313644 in words is "six million, three hundred thirteen thousand, six hundred forty-four".