561601705 has 16 divisors (see below), whose sum is σ = 781695360. Its totient is φ = 379348992.

The previous prime is 561601697. The next prime is 561601739. The reversal of 561601705 is 507106165.

561601705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 561601705 - 2³ = 561601697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117400 + ... + 122089.

It is an arithmetic number, because the mean of its divisors is an integer number (48855960).

Almost surely, 2^561601705 is an apocalyptic number.

It is an amenable number.

561601705 is a deficient number, since it is larger than the sum of its proper divisors (220093655).

561601705 is a wasteful number, since it uses less digits than its factorization.

561601705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239568.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 561601705 is about 23698.1371630768. The cubic root of 561601705 is about 825.0421551768.

The spelling of 561601705 in words is "five hundred sixty-one million, six hundred one thousand, seven hundred five".