567998779 has 4 divisors (see below), whose sum is σ = 570436776. Its totient is φ = 565560784.

The previous prime is 567998759. The next prime is 567998791. The reversal of 567998779 is 977899765.

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 567998779 - 2¹⁹ = 567474491 is a prime.

It is a super-2 number, since 2×567998779² = 645245225890981682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (567998759) 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, 1218649 + ... + 1219114.

It is an arithmetic number, because the mean of its divisors is an integer number (142609194).

Almost surely, 2^567998779 is an apocalyptic number.

567998779 is a deficient number, since it is larger than the sum of its proper divisors (2437997).

567998779 is a wasteful number, since it uses less digits than its factorization.

567998779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437996.

The product of its digits is 60011280, while the sum is 67.

The square root of 567998779 is about 23832.7249596012. The cubic root of 567998779 is about 828.1629564641.

The spelling of 567998779 in words is "five hundred sixty-seven million, nine hundred ninety-eight thousand, seven hundred seventy-nine".