561893700 has 72 divisors (see below), whose sum is σ = 1628520768. Its totient is φ = 149582720.

The previous prime is 561893687. The next prime is 561893719. The reversal of 561893700 is 7398165.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230689 + ... + 233111.

It is an arithmetic number, because the mean of its divisors is an integer number (22618344).

Almost surely, 2^561893700 is an apocalyptic number.

561893700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561893700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814260384).

561893700 is an abundant number, since it is smaller than the sum of its proper divisors (1066627068).

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

561893700 is a wasteful number, since it uses less digits than its factorization.

561893700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213 (or 3206 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 561893700 is about 23704.2970787999. The cubic root of 561893700 is about 825.1851191565.

The spelling of 561893700 in words is "five hundred sixty-one million, eight hundred ninety-three thousand, seven hundred".