561776116 has 24 divisors (see below), whose sum is σ = 1128929760. Its totient is φ = 241912800.

The previous prime is 561776107. The next prime is 561776119. The reversal of 561776116 is 611677165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561776119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335155 + ... + 336826.

It is an arithmetic number, because the mean of its divisors is an integer number (47038740).

Almost surely, 2^561776116 is an apocalyptic number.

It is an amenable number.

561776116 is an abundant number, since it is smaller than the sum of its proper divisors (567153644).

561776116 is a wasteful number, since it uses less digits than its factorization.

561776116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672015 (or 672013 counting only the distinct ones).

The product of its digits is 52920, while the sum is 40.

The square root of 561776116 is about 23701.8167236185. The cubic root of 561776116 is about 825.1275546883.

It can be divided in two parts, 561 and 776116, that added together give a palindrome (776677).

The spelling of 561776116 in words is "five hundred sixty-one million, seven hundred seventy-six thousand, one hundred sixteen".