573868781 has 4 divisors (see below), whose sum is σ = 579785052. Its totient is φ = 567952512.

The previous prime is 573868777. The next prime is 573868817. The reversal of 573868781 is 187868375.

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 82537225 + 491331556 = 9085^2 + 22166^2 .

It is a cyclic number.

It is not a de Polignac number, because 573868781 - 2² = 573868777 is a prime.

It is a super-2 number, since 2×573868781² = 658650755612851922, 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 (573868741) 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, 2957990 + ... + 2958183.

It is an arithmetic number, because the mean of its divisors is an integer number (144946263).

Almost surely, 2^573868781 is an apocalyptic number.

It is an amenable number.

573868781 is a deficient number, since it is larger than the sum of its proper divisors (5916271).

573868781 is an equidigital number, since it uses as much as digits as its factorization.

573868781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916270.

The product of its digits is 2257920, while the sum is 53.

The square root of 573868781 is about 23955.5584572767. The cubic root of 573868781 is about 831.0060771401.

The spelling of 573868781 in words is "five hundred seventy-three million, eight hundred sixty-eight thousand, seven hundred eighty-one".