561758976 has 90 divisors (see below), whose sum is σ = 1675125452. Its totient is φ = 187246080.

The previous prime is 561758963. The next prime is 561759019. The reversal of 561758976 is 679857165.

561758976 is a `hidden beast` number, since 56 + 1 + 7 + 589 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7191 + ... + 34281.

Almost surely, 2^561758976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561758976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837562726).

561758976 is an abundant number, since it is smaller than the sum of its proper divisors (1113366476).

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

561758976 is an equidigital number, since it uses as much as digits as its factorization.

561758976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27119 (or 27096 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 561758976 is about 23701.4551452015. The cubic root of 561758976 is about 825.1191629526.

The spelling of 561758976 in words is "five hundred sixty-one million, seven hundred fifty-eight thousand, nine hundred seventy-six".