561733020 has 72 divisors (see below), whose sum is σ = 1758906240. Its totient is φ = 144961920.

The previous prime is 561732973. The next prime is 561733027. The reversal of 561733020 is 20337165.

It is a happy number.

561733020 is a `hidden beast` number, since 561 + 73 + 30 + 2 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561733027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44755 + ... + 55914.

Almost surely, 2^561733020 is an apocalyptic number.

It is an amenable number.

561733020 is an abundant number, since it is smaller than the sum of its proper divisors (1197173220).

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

561733020 is a wasteful number, since it uses less digits than its factorization.

561733020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100715 (or 100710 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 561733020 is about 23700.9075775591. The cubic root of 561733020 is about 825.1064545825.

The spelling of 561733020 in words is "five hundred sixty-one million, seven hundred thirty-three thousand, twenty".