5820649 has 4 divisors (see below), whose sum is σ = 5828164. Its totient is φ = 5813136.

The previous prime is 5820637. The next prime is 5820667. The reversal of 5820649 is 9460285.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9460285 = 5 ⋅1892057.

It can be written as a sum of positive squares in 2 ways, for example, as 2088025 + 3732624 = 1445^2 + 1932^2 .

It is a cyclic number.

It is not a de Polignac number, because 5820649 - 2¹¹ = 5818601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5820629) 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 3 ways as a sum of consecutive naturals, for example, 2442 + ... + 4195.

It is an arithmetic number, because the mean of its divisors is an integer number (1457041).

Almost surely, 2^5820649 is an apocalyptic number.

It is an amenable number.

5820649 is a deficient number, since it is larger than the sum of its proper divisors (7515).

5820649 is an equidigital number, since it uses as much as digits as its factorization.

5820649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 5820649 is about 2412.6021221909. The cubic root of 5820649 is about 179.8831443185.

The spelling of 5820649 in words is "five million, eight hundred twenty thousand, six hundred forty-nine".