1006330644 has 72 divisors (see below), whose sum is σ = 2791833408. Its totient is φ = 303102720.

The previous prime is 1006330639. The next prime is 1006330651. The reversal of 1006330644 is 4460336001.

1006330644 is a `hidden beast` number, since 10 + 0 + 6 + 3 + 3 + 0 + 644 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58524 + ... + 73740.

It is an arithmetic number, because the mean of its divisors is an integer number (38775464).

Almost surely, 2^1006330644 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 1006330644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395916704).

1006330644 is an abundant number, since it is smaller than the sum of its proper divisors (1785502764).

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

1006330644 is a wasteful number, since it uses less digits than its factorization.

1006330644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15405 (or 15400 counting only the distinct ones).

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

The square root of 1006330644 is about 31722.7149531688. The cubic root of 1006330644 is about 1002.1057772563.

Adding to 1006330644 its reverse (4460336001), we get a palindrome (5466666645).

The spelling of 1006330644 in words is "one billion, six million, three hundred thirty thousand, six hundred forty-four".