567997643 has 4 divisors (see below), whose sum is σ = 568268568. Its totient is φ = 567726720.

The previous prime is 567997613. The next prime is 567997663. The reversal of 567997643 is 346799765.

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 567997643 - 2¹⁰ = 567996619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (567997603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132293 + ... + 136518.

It is an arithmetic number, because the mean of its divisors is an integer number (142067142).

Almost surely, 2^567997643 is an apocalyptic number.

567997643 is a deficient number, since it is larger than the sum of its proper divisors (270925).

567997643 is a wasteful number, since it uses less digits than its factorization.

567997643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270924.

The product of its digits is 8573040, while the sum is 56.

The square root of 567997643 is about 23832.7011268131. The cubic root of 567997643 is about 828.1624043539.

The spelling of 567997643 in words is "five hundred sixty-seven million, nine hundred ninety-seven thousand, six hundred forty-three".