561667230 has 64 divisors (see below), whose sum is σ = 1505030400. Its totient is φ = 149052960.

The previous prime is 561667219. The next prime is 561667243. The reversal of 561667230 is 32766165.

561667230 is a `hidden beast` number, since 5 + 616 + 6 + 7 + 2 + 30 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52041 + ... + 61899.

It is an arithmetic number, because the mean of its divisors is an integer number (23516100).

Almost surely, 2^561667230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561667230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752515200).

561667230 is an abundant number, since it is smaller than the sum of its proper divisors (943363170).

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

561667230 is a wasteful number, since it uses less digits than its factorization.

561667230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10086 (or 10080 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 561667230 is about 23699.5196153846. The cubic root of 561667230 is about 825.0742412528.

The spelling of 561667230 in words is "five hundred sixty-one million, six hundred sixty-seven thousand, two hundred thirty".