561120846 has 128 divisors (see below), whose sum is σ = 1375266816. Its totient is φ = 150353280.

The previous prime is 561120841. The next prime is 561120869. The reversal of 561120846 is 648021165.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561120841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2471785 + ... + 2472011.

It is an arithmetic number, because the mean of its divisors is an integer number (10744272).

Almost surely, 2^561120846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561120846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687633408).

561120846 is an abundant number, since it is smaller than the sum of its proper divisors (814145970).

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

561120846 is a wasteful number, since it uses less digits than its factorization.

561120846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 561120846 is about 23687.9894883462. The cubic root of 561120846 is about 824.8066132580.

The spelling of 561120846 in words is "five hundred sixty-one million, one hundred twenty thousand, eight hundred forty-six".