5705230781 has 4 divisors (see below), whose sum is σ = 5706117564. Its totient is φ = 5704344000.

The previous prime is 5705230771. The next prime is 5705230789. The reversal of 5705230781 is 1870325075.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3853305625 + 1851925156 = 62075^2 + 43034^2 .

It is a cyclic number.

It is not a de Polignac number, because 5705230781 - 2¹⁰ = 5705229757 is a prime.

It is a super-2 number, since 2×5705230781² = 65099316528939739922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5705230789) 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, 433670 + ... + 446631.

It is an arithmetic number, because the mean of its divisors is an integer number (1426529391).

Almost surely, 2^5705230781 is an apocalyptic number.

It is an amenable number.

5705230781 is a deficient number, since it is larger than the sum of its proper divisors (886783).

5705230781 is an equidigital number, since it uses as much as digits as its factorization.

5705230781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886782.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 5705230781 is about 75532.9781022832. The cubic root of 5705230781 is about 1786.8622433202.

The spelling of 5705230781 in words is "five billion, seven hundred five million, two hundred thirty thousand, seven hundred eighty-one".