5721644 has 12 divisors (see below), whose sum is σ = 10029768. Its totient is φ = 2856000.

The previous prime is 5721631. The next prime is 5721649. The reversal of 5721644 is 4461275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3524 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (835814).

Almost surely, 2^5721644 is an apocalyptic number.

It is an amenable number.

5721644 is a deficient number, since it is larger than the sum of its proper divisors (4308124).

5721644 is a wasteful number, since it uses less digits than its factorization.

5721644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416 (or 2414 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 5721644 is about 2391.9958193943. The cubic root of 5721644 is about 178.8574127429.

The spelling of 5721644 in words is "five million, seven hundred twenty-one thousand, six hundred forty-four".