561723613 has 8 divisors (see below), whose sum is σ = 612966816. Its totient is φ = 510510000.

The previous prime is 561723583. The next prime is 561723629. The reversal of 561723613 is 316327165.

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

It is not a de Polignac number, because 561723613 - 2²¹ = 559626461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561723653) 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, 55870 + ... + 65152.

It is an arithmetic number, because the mean of its divisors is an integer number (76620852).

Almost surely, 2^561723613 is an apocalyptic number.

It is an amenable number.

561723613 is a deficient number, since it is larger than the sum of its proper divisors (51243203).

561723613 is a wasteful number, since it uses less digits than its factorization.

561723613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14795.

The product of its digits is 22680, while the sum is 34.

The square root of 561723613 is about 23700.7091244123. The cubic root of 561723613 is about 825.1018487054.

The spelling of 561723613 in words is "five hundred sixty-one million, seven hundred twenty-three thousand, six hundred thirteen".