561198830 has 16 divisors (see below), whose sum is σ = 1010532240. Its totient is φ = 224396352.

The previous prime is 561198791. The next prime is 561198851. The reversal of 561198830 is 38891165.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23066 + ... + 40674.

It is an arithmetic number, because the mean of its divisors is an integer number (63158265).

Almost surely, 2^561198830 is an apocalyptic number.

561198830 is a deficient number, since it is larger than the sum of its proper divisors (449333410).

561198830 is a wasteful number, since it uses less digits than its factorization.

561198830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20803.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 561198830 is about 23689.6354974069. The cubic root of 561198830 is about 824.8448217472.

The spelling of 561198830 in words is "five hundred sixty-one million, one hundred ninety-eight thousand, eight hundred thirty".