5721688 has 32 divisors (see below), whose sum is σ = 12418560. Its totient is φ = 2420640.

The previous prime is 5721659. The next prime is 5721689. The reversal of 5721688 is 8861275.

5721688 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

5721688 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4033 + ... + 5263.

It is an arithmetic number, because the mean of its divisors is an integer number (388080).

Almost surely, 2^5721688 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 5721688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6209280).

5721688 is an abundant number, since it is smaller than the sum of its proper divisors (6696872).

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

5721688 is a wasteful number, since it uses less digits than its factorization.

5721688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1323 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 5721688 is about 2392.0050167171. The cubic root of 5721688 is about 178.8578712187.

The spelling of 5721688 in words is "five million, seven hundred twenty-one thousand, six hundred eighty-eight".