6694330644 has 96 divisors (see below), whose sum is σ = 17788897280. Its totient is φ = 2175919200.

The previous prime is 6694330633. The next prime is 6694330651. The reversal of 6694330644 is 4460334966.

It is a self number, because there is not a number n which added to its sum of digits gives 6694330644.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5437509 + ... + 5438739.

Almost surely, 2^6694330644 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 6694330644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8894448640).

6694330644 is an abundant number, since it is smaller than the sum of its proper divisors (11094566636).

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

6694330644 is a wasteful number, since it uses less digits than its factorization.

6694330644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 45.

The square root of 6694330644 is about 81818.8892860322. The cubic root of 6694330644 is about 1884.6717451237.

The spelling of 6694330644 in words is "six billion, six hundred ninety-four million, three hundred thirty thousand, six hundred forty-four".