561117696 has 80 divisors (see below), whose sum is σ = 1500225408. Its totient is φ = 186368000.

The previous prime is 561117673. The next prime is 561117719. The reversal of 561117696 is 696711165.

It is an interprime number because it is at equal distance from previous prime (561117673) and next prime (561117719).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615481 + ... + 616391.

Almost surely, 2^561117696 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 561117696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750112704).

561117696 is an abundant number, since it is smaller than the sum of its proper divisors (939107712).

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

561117696 is an equidigital number, since it uses as much as digits as its factorization.

561117696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333 (or 1317 counting only the distinct ones).

The product of its digits is 68040, while the sum is 42.

The square root of 561117696 is about 23687.9229988617. The cubic root of 561117696 is about 824.8050698319.

The spelling of 561117696 in words is "five hundred sixty-one million, one hundred seventeen thousand, six hundred ninety-six".