5866721 has 12 divisors (see below), whose sum is σ = 6930288. Its totient is φ = 4950792.

The previous prime is 5866711. The next prime is 5866723. The reversal of 5866721 is 1276685.

5866721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5866721 - 2¹⁴ = 5850337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5866723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2390 + ... + 4176.

It is an arithmetic number, because the mean of its divisors is an integer number (577524).

Almost surely, 2^5866721 is an apocalyptic number.

It is an amenable number.

5866721 is a deficient number, since it is larger than the sum of its proper divisors (1063567).

5866721 is a wasteful number, since it uses less digits than its factorization.

5866721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1861 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 5866721 is about 2422.1314993204. The cubic root of 5866721 is about 180.3565053786.

The spelling of 5866721 in words is "five million, eight hundred sixty-six thousand, seven hundred twenty-one".