576991 has 4 divisors (see below), whose sum is σ = 579352. Its totient is φ = 574632.

The previous prime is 576977. The next prime is 577007. The reversal of 576991 is 199675.

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

It is a cyclic number.

It is not a de Polignac number, because 576991 - 2¹⁵ = 544223 is a prime.

It is a super-2 number, since 2×576991² = 665837228162, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 576991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (576391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (144838).

2⁵⁷⁶⁹⁹¹ is an apocalyptic number.

576991 is a deficient number, since it is larger than the sum of its proper divisors (2361).

576991 is a wasteful number, since it uses less digits than its factorization.

576991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360.

The product of its digits is 17010, while the sum is 37.

The square root of 576991 is about 759.5992364398. The cubic root of 576991 is about 83.2510423206.

The spelling of 576991 in words is "five hundred seventy-six thousand, nine hundred ninety-one".