561199634 has 16 divisors (see below), whose sum is σ = 883205376. Its totient is φ = 267094800.

The previous prime is 561199607. The next prime is 561199673. The reversal of 561199634 is 436991165.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 3.

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 7 ways as a sum of consecutive naturals, for example, 70412 + ... + 77975.

It is an arithmetic number, because the mean of its divisors is an integer number (55200336).

Almost surely, 2^561199634 is an apocalyptic number.

561199634 is a deficient number, since it is larger than the sum of its proper divisors (322005742).

561199634 is a wasteful number, since it uses less digits than its factorization.

561199634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148481.

The product of its digits is 174960, while the sum is 44.

The square root of 561199634 is about 23689.6524668472. The cubic root of 561199634 is about 824.8452156509.

The spelling of 561199634 in words is "five hundred sixty-one million, one hundred ninety-nine thousand, six hundred thirty-four".