5644947726 has 128 divisors (see below), whose sum is σ = 13993067520. Its totient is φ = 1672473600.

The previous prime is 5644947719. The next prime is 5644947769. The reversal of 5644947726 is 6277494465.

5644947726 is a `hidden beast` number, since 5 + 64 + 494 + 77 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5777350 + ... + 5778326.

It is an arithmetic number, because the mean of its divisors is an integer number (109320840).

Almost surely, 2^5644947726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5644947726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6996533760).

5644947726 is an abundant number, since it is smaller than the sum of its proper divisors (8348119794).

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

5644947726 is a wasteful number, since it uses less digits than its factorization.

5644947726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1201 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The square root of 5644947726 is about 75132.8671488051. The cubic root of 5644947726 is about 1780.5464515490.

The spelling of 5644947726 in words is "five billion, six hundred forty-four million, nine hundred forty-seven thousand, seven hundred twenty-six".