563743840 has 144 divisors (see below), whose sum is σ = 1505404656. Its totient is φ = 199203840.

The previous prime is 563743781. The next prime is 563743841. The reversal of 563743840 is 48347365.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 563743793 and 563743802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563743841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 715927 + ... + 716713.

It is an arithmetic number, because the mean of its divisors is an integer number (10454199).

Almost surely, 2^563743840 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 563743840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752702328).

563743840 is an abundant number, since it is smaller than the sum of its proper divisors (941660816).

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

563743840 is a wasteful number, since it uses less digits than its factorization.

563743840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 563743840 is about 23743.2904206641. The cubic root of 563743840 is about 826.0898189824.

The spelling of 563743840 in words is "five hundred sixty-three million, seven hundred forty-three thousand, eight hundred forty".