561971076 has 48 divisors (see below), whose sum is σ = 1334026176. Its totient is φ = 184086144.

The previous prime is 561971071. The next prime is 561971089. The reversal of 561971076 is 670179165.

It is a super-2 number, since 2×561971076² = 631622980521195552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561971071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640350 + ... + 641226.

It is an arithmetic number, because the mean of its divisors is an integer number (27792212).

Almost surely, 2^561971076 is an apocalyptic number.

It is an amenable number.

561971076 is an abundant number, since it is smaller than the sum of its proper divisors (772055100).

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

561971076 is a wasteful number, since it uses less digits than its factorization.

561971076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 561971076 is about 23705.9291317594. The cubic root of 561971076 is about 825.2229949998. Note that the first 3 decimals are identical.

The spelling of 561971076 in words is "five hundred sixty-one million, nine hundred seventy-one thousand, seventy-six".