565540406 has 4 divisors (see below), whose sum is σ = 848310612. Its totient is φ = 282770202.

The previous prime is 565540403. The next prime is 565540421. The reversal of 565540406 is 604045565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604045565 = 5 ⋅120809113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565540403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141385100 + ... + 141385103.

It is an arithmetic number, because the mean of its divisors is an integer number (212077653).

Almost surely, 2^565540406 is an apocalyptic number.

565540406 is a deficient number, since it is larger than the sum of its proper divisors (282770206).

565540406 is a wasteful number, since it uses less digits than its factorization.

565540406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282770205.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 565540406 is about 23781.0934567778. The cubic root of 565540406 is about 826.9664293633.

The spelling of 565540406 in words is "five hundred sixty-five million, five hundred forty thousand, four hundred six".