561676768 has 36 divisors (see below), whose sum is σ = 1114540560. Its totient is φ = 278631360.

The previous prime is 561676757. The next prime is 561676789. The reversal of 561676768 is 867676165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2072473 + ... + 2072743.

It is an arithmetic number, because the mean of its divisors is an integer number (30959460).

Almost surely, 2^561676768 is an apocalyptic number.

It is an amenable number.

561676768 is a deficient number, since it is larger than the sum of its proper divisors (552863792).

561676768 is an equidigital number, since it uses as much as digits as its factorization.

561676768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 512 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The square root of 561676768 is about 23699.7208422378. The cubic root of 561676768 is about 825.0789115825.

It can be divided in two parts, 561 and 676768, that added together give a square (677329 = 823²).

The spelling of 561676768 in words is "five hundred sixty-one million, six hundred seventy-six thousand, seven hundred sixty-eight".