561768284 has 48 divisors (see below), whose sum is σ = 1278982656. Its totient is φ = 209352000.

The previous prime is 561768257. The next prime is 561768377. The reversal of 561768284 is 482867165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32567 + ... + 46734.

It is an arithmetic number, because the mean of its divisors is an integer number (26645472).

Almost surely, 2^561768284 is an apocalyptic number.

It is an amenable number.

561768284 is an abundant number, since it is smaller than the sum of its proper divisors (717214372).

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

561768284 is a wasteful number, since it uses less digits than its factorization.

561768284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79346 (or 79344 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 561768284 is about 23701.6515036400. The cubic root of 561768284 is about 825.1237201661.

The spelling of 561768284 in words is "five hundred sixty-one million, seven hundred sixty-eight thousand, two hundred eighty-four".