5440000664 has 64 divisors (see below), whose sum is σ = 12178045440. Its totient is φ = 2227484160.

The previous prime is 5440000627. The next prime is 5440000681. The reversal of 5440000664 is 4660000445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444544 + ... + 1448304.

It is an arithmetic number, because the mean of its divisors is an integer number (190281960).

Almost surely, 2^5440000664 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 5440000664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6089022720).

5440000664 is an abundant number, since it is smaller than the sum of its proper divisors (6738044776).

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

5440000664 is a wasteful number, since it uses less digits than its factorization.

5440000664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4920 (or 4916 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 5440000664 is about 73756.3601596500. The cubic root of 5440000664 is about 1758.7319404195.

The spelling of 5440000664 in words is "five billion, four hundred forty million, six hundred sixty-four", and thus it is an aban number.