5707821 has 16 divisors (see below), whose sum is σ = 8884224. Its totient is φ = 3191664.

The previous prime is 5707817. The next prime is 5707843. The reversal of 5707821 is 1287075.

It is a happy number.

It is not a de Polignac number, because 5707821 - 2² = 5707817 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5707811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1905 + ... + 3878.

It is an arithmetic number, because the mean of its divisors is an integer number (555264).

Almost surely, 2^5707821 is an apocalyptic number.

It is an amenable number.

5707821 is a deficient number, since it is larger than the sum of its proper divisors (3176403).

5707821 is a wasteful number, since it uses less digits than its factorization.

5707821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 5707821 is about 2389.1046440037. The cubic root of 5707821 is about 178.7132618843.

The spelling of 5707821 in words is "five million, seven hundred seven thousand, eight hundred twenty-one".