561089746 has 8 divisors (see below), whose sum is σ = 961868160. Its totient is φ = 240467028.

The previous prime is 561089701. The next prime is 561089803. The reversal of 561089746 is 647980165.

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

It is a junction number, because it is equal to n+sod(n) for n = 561089696 and 561089705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20038906 + ... + 20038933.

It is an arithmetic number, because the mean of its divisors is an integer number (120233520).

Almost surely, 2^561089746 is an apocalyptic number.

561089746 is a deficient number, since it is larger than the sum of its proper divisors (400778414).

561089746 is a wasteful number, since it uses less digits than its factorization.

561089746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40077848.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 561089746 is about 23687.3330284353. Note that the first 3 decimals coincide. The cubic root of 561089746 is about 824.7913747345.

The spelling of 561089746 in words is "five hundred sixty-one million, eighty-nine thousand, seven hundred forty-six".