5721406 has 8 divisors (see below), whose sum is σ = 8595720. Its totient is φ = 2856168.

The previous prime is 5721389. The next prime is 5721409. The reversal of 5721406 is 6041275.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721409) 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, 376 + ... + 3403.

It is an arithmetic number, because the mean of its divisors is an integer number (1074465).

Almost surely, 2^5721406 is an apocalyptic number.

5721406 is a deficient number, since it is larger than the sum of its proper divisors (2874314).

5721406 is a wasteful number, since it uses less digits than its factorization.

5721406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4538.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 5721406 is about 2391.9460696262. The cubic root of 5721406 is about 178.8549327648.

The spelling of 5721406 in words is "five million, seven hundred twenty-one thousand, four hundred six".