561116406 has 32 divisors (see below), whose sum is σ = 1171322208. Its totient is φ = 179029760.

The previous prime is 561116393. The next prime is 561116411. The reversal of 561116406 is 604611165.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8481 + ... + 34556.

It is an arithmetic number, because the mean of its divisors is an integer number (36603819).

Almost surely, 2^561116406 is an apocalyptic number.

561116406 is an abundant number, since it is smaller than the sum of its proper divisors (610205802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561116406 is a wasteful number, since it uses less digits than its factorization.

561116406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43136.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 561116406 is about 23687.8957697808. The cubic root of 561116406 is about 824.8044377605.

The spelling of 561116406 in words is "five hundred sixty-one million, one hundred sixteen thousand, four hundred six".