568978381 has 4 divisors (see below), whose sum is σ = 581084352. Its totient is φ = 556872412.

The previous prime is 568978367. The next prime is 568978411. The reversal of 568978381 is 183879865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 568978381 - 2¹¹ = 568976333 is a prime.

It is a super-2 number, since 2×568978381² = 647472796090762322, 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 (568978181) 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, 6052915 + ... + 6053008.

It is an arithmetic number, because the mean of its divisors is an integer number (145271088).

Almost surely, 2^568978381 is an apocalyptic number.

It is an amenable number.

568978381 is a deficient number, since it is larger than the sum of its proper divisors (12105971).

568978381 is a wasteful number, since it uses less digits than its factorization.

568978381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12105970.

The product of its digits is 2903040, while the sum is 55.

The square root of 568978381 is about 23853.2677216351. The cubic root of 568978381 is about 828.6387815174.

The spelling of 568978381 in words is "five hundred sixty-eight million, nine hundred seventy-eight thousand, three hundred eighty-one".