561488676 has 48 divisors (see below), whose sum is σ = 1519666176. Its totient is φ = 158029344.

The previous prime is 561488659. The next prime is 561488687. The reversal of 561488676 is 676884165.

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, 44256 + ... + 55511.

It is an arithmetic number, because the mean of its divisors is an integer number (31659712).

Almost surely, 2^561488676 is an apocalyptic number.

It is an amenable number.

561488676 is an abundant number, since it is smaller than the sum of its proper divisors (958177500).

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

561488676 is a wasteful number, since it uses less digits than its factorization.

561488676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99848 (or 99846 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 561488676 is about 23695.7522775708. The cubic root of 561488676 is about 824.9868016254.

The spelling of 561488676 in words is "five hundred sixty-one million, four hundred eighty-eight thousand, six hundred seventy-six".