561863735 has 4 divisors (see below), whose sum is σ = 674236488. Its totient is φ = 449490984.

The previous prime is 561863693. The next prime is 561863737. The reversal of 561863735 is 537368165.

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 561863735 - 2¹⁰ = 561862711 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 (561863737) 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, 56186369 + ... + 56186378.

It is an arithmetic number, because the mean of its divisors is an integer number (168559122).

Almost surely, 2^561863735 is an apocalyptic number.

561863735 is a deficient number, since it is larger than the sum of its proper divisors (112372753).

561863735 is a wasteful number, since it uses less digits than its factorization.

561863735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112372752.

The product of its digits is 453600, while the sum is 44.

The square root of 561863735 is about 23703.6650119765. The cubic root of 561863735 is about 825.1704502421.

The spelling of 561863735 in words is "five hundred sixty-one million, eight hundred sixty-three thousand, seven hundred thirty-five".