561773605 has 8 divisors (see below), whose sum is σ = 678593664. Its totient is φ = 446442000.

The previous prime is 561773603. The next prime is 561773609. The reversal of 561773605 is 506377165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561773605 - 2¹ = 561773603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561773603) 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 7 ways as a sum of consecutive naturals, for example, 371281 + ... + 372790.

It is an arithmetic number, because the mean of its divisors is an integer number (84824208).

Almost surely, 2^561773605 is an apocalyptic number.

It is an amenable number.

561773605 is a deficient number, since it is larger than the sum of its proper divisors (116820059).

561773605 is a wasteful number, since it uses less digits than its factorization.

561773605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744227.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 561773605 is about 23701.7637529362. The cubic root of 561773605 is about 825.1263253146.

The spelling of 561773605 in words is "five hundred sixty-one million, seven hundred seventy-three thousand, six hundred five".