561635345 has 8 divisors (see below), whose sum is σ = 709434240. Its totient is φ = 425660400.

The previous prime is 561635323. The next prime is 561635381. The reversal of 561635345 is 543536165.

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

It is not a de Polignac number, because 561635345 - 2¹² = 561631249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561635299 and 561635308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2955881 + ... + 2956070.

It is an arithmetic number, because the mean of its divisors is an integer number (88679280).

Almost surely, 2^561635345 is an apocalyptic number.

It is an amenable number.

561635345 is a deficient number, since it is larger than the sum of its proper divisors (147798895).

561635345 is a wasteful number, since it uses less digits than its factorization.

561635345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911975.

The product of its digits is 162000, while the sum is 38.

The square root of 561635345 is about 23698.8469128774. The cubic root of 561635345 is about 825.0586282180.

The spelling of 561635345 in words is "five hundred sixty-one million, six hundred thirty-five thousand, three hundred forty-five".