561846847 has 4 divisors (see below), whose sum is σ = 563412240. Its totient is φ = 560281456.

The previous prime is 561846833. The next prime is 561846863. The reversal of 561846847 is 748648165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561846847 - 2¹¹ = 561844799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561846847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561846877) 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 3 ways as a sum of consecutive naturals, for example, 782158 + ... + 782875.

It is an arithmetic number, because the mean of its divisors is an integer number (140853060).

Almost surely, 2^561846847 is an apocalyptic number.

561846847 is a deficient number, since it is larger than the sum of its proper divisors (1565393).

561846847 is a wasteful number, since it uses less digits than its factorization.

561846847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565392.

The product of its digits is 1290240, while the sum is 49.

The square root of 561846847 is about 23703.3087774682. The cubic root of 561846847 is about 825.1621827464.

The spelling of 561846847 in words is "five hundred sixty-one million, eight hundred forty-six thousand, eight hundred forty-seven".