5697721 has 8 divisors (see below), whose sum is σ = 5981184. Its totient is φ = 5417280.

The previous prime is 5697719. The next prime is 5697743. The reversal of 5697721 is 1277965.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5697721 - 2¹ = 5697719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5697751) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3745 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (747648).

Almost surely, 2^5697721 is an apocalyptic number.

It is an amenable number.

5697721 is a deficient number, since it is larger than the sum of its proper divisors (283463).

5697721 is a wasteful number, since it uses less digits than its factorization.

5697721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511.

The product of its digits is 26460, while the sum is 37.

The square root of 5697721 is about 2386.9899455172. The cubic root of 5697721 is about 178.6077884970.

The spelling of 5697721 in words is "five million, six hundred ninety-seven thousand, seven hundred twenty-one".