561728395 has 8 divisors (see below), whose sum is σ = 681648480. Its totient is φ = 444333120.

The previous prime is 561728383. The next prime is 561728417. The reversal of 561728395 is 593827165.

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

It is not a de Polignac number, because 561728395 - 2¹⁹ = 561204107 is a prime.

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, 630711 + ... + 631600.

It is an arithmetic number, because the mean of its divisors is an integer number (85206060).

Almost surely, 2^561728395 is an apocalyptic number.

561728395 is a deficient number, since it is larger than the sum of its proper divisors (119920085).

561728395 is a wasteful number, since it uses less digits than its factorization.

561728395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262405.

The product of its digits is 453600, while the sum is 46.

The square root of 561728395 is about 23700.8100072550. The cubic root of 561728395 is about 825.1041900857.

The spelling of 561728395 in words is "five hundred sixty-one million, seven hundred twenty-eight thousand, three hundred ninety-five".